./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:53,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:53,525 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:09:53,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:53,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:53,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:53,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:53,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:53,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:53,564 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:53,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:53,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:53,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:53,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:53,565 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:53,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:53,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:53,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:53,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:53,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:53,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:53,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:53,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:53,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:53,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:53,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:53,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:53,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:53,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:53,571 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_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2024-11-28 05:09:53,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:53,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:53,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:53,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:53,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:53,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2024-11-28 05:09:57,126 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/049b367f8/53ee4273d00947e584a0ffe7f0a86e3e/FLAG11b9d807b [2024-11-28 05:09:57,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:57,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2024-11-28 05:09:57,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/049b367f8/53ee4273d00947e584a0ffe7f0a86e3e/FLAG11b9d807b [2024-11-28 05:09:57,634 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/049b367f8/53ee4273d00947e584a0ffe7f0a86e3e [2024-11-28 05:09:57,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:57,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:57,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:57,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:57,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:57,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:57" (1/1) ... [2024-11-28 05:09:57,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174aeba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:57, skipping insertion in model container [2024-11-28 05:09:57,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:57" (1/1) ... [2024-11-28 05:09:57,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:58,150 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:58,208 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:58,210 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:58,211 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:58,213 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:58,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:58,245 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-28 05:09:58,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61269c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:58, skipping insertion in model container [2024-11-28 05:09:58,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:58,246 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 05:09:58,249 INFO L158 Benchmark]: Toolchain (without parser) took 609.87ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 103.8MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:09:58,249 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:58,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 606.81ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 103.8MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:09:58,251 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 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 606.81ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 103.8MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:10:01,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:10:01,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 05:10:01,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:10:01,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:10:01,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:10:01,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:10:01,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:10:01,308 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:10:01,308 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:10:01,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:10:01,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:10:01,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:10:01,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:10:01,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:10:01,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:10:01,311 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:10:01,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:10:01,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:10:01,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:10:01,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:10:01,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:10:01,313 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:10:01,314 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:01,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:10:01,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:10:01,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:10:01,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:10:01,314 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_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2024-11-28 05:10:01,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:10:01,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:10:01,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:10:01,695 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:10:01,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:10:01,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2024-11-28 05:10:04,792 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f9035310/1b00483900b347b38a32c8e3871bdb20/FLAGfce049159 [2024-11-28 05:10:05,180 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:10:05,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2024-11-28 05:10:05,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f9035310/1b00483900b347b38a32c8e3871bdb20/FLAGfce049159 [2024-11-28 05:10:05,229 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f9035310/1b00483900b347b38a32c8e3871bdb20 [2024-11-28 05:10:05,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:10:05,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:10:05,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:10:05,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:10:05,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:10:05,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:10:05" (1/1) ... [2024-11-28 05:10:05,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ddf7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:05, skipping insertion in model container [2024-11-28 05:10:05,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:10:05" (1/1) ... [2024-11-28 05:10:05,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:10:05,758 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,850 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,853 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,854 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,855 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:10:05,886 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 05:10:05,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:10:05,962 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,993 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,994 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,995 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,995 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:10:05,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:10:06,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:10:06,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:10:06,148 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:10:06,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06 WrapperNode [2024-11-28 05:10:06,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:10:06,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:10:06,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:10:06,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:10:06,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,206 INFO L138 Inliner]: procedures = 167, calls = 92, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 76 [2024-11-28 05:10:06,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:10:06,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:10:06,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:10:06,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:10:06,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,257 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 05:10:06,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,276 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:10:06,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:10:06,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:10:06,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:10:06,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (1/1) ... [2024-11-28 05:10:06,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:10:06,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:06,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:10:06,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-28 05:10:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:10:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:10:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:10:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:10:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:10:06,539 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:10:06,543 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:10:07,032 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-11-28 05:10:07,033 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:10:07,055 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:10:07,055 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:10:07,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:10:07 BoogieIcfgContainer [2024-11-28 05:10:07,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:10:07,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:10:07,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:10:07,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:10:07,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:10:05" (1/3) ... [2024-11-28 05:10:07,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f37c21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:10:07, skipping insertion in model container [2024-11-28 05:10:07,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:10:06" (2/3) ... [2024-11-28 05:10:07,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f37c21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:10:07, skipping insertion in model container [2024-11-28 05:10:07,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:10:07" (3/3) ... [2024-11-28 05:10:07,071 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test10-2.i [2024-11-28 05:10:07,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:10:07,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test10-2.i that has 2 procedures, 93 locations, 1 initial locations, 0 loop locations, and 43 error locations. [2024-11-28 05:10:07,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:10:07,172 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;@63e94ee9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:10:07,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-11-28 05:10:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:10:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 05:10:07,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:07,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:07,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:07,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1192529059, now seen corresponding path program 1 times [2024-11-28 05:10:07,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:07,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509767939] [2024-11-28 05:10:07,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:07,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:07,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:07,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:10:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:07,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:10:07,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:07,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:07,519 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509767939] [2024-11-28 05:10:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509767939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:07,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:07,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248949844] [2024-11-28 05:10:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:07,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:10:07,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:07,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:10:07,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:07,558 INFO L87 Difference]: Start difference. First operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:10:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:07,891 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2024-11-28 05:10:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:10:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2024-11-28 05:10:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:07,913 INFO L225 Difference]: With dead ends: 162 [2024-11-28 05:10:07,913 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 05:10:07,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:07,924 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 64 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:07,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:10:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 05:10:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 95. [2024-11-28 05:10:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 46 states have (on average 2.0) internal successors, (92), 88 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 05:10:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2024-11-28 05:10:07,995 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 11 [2024-11-28 05:10:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:07,996 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2024-11-28 05:10:07,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:10:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2024-11-28 05:10:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 05:10:07,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:07,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:08,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:08,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:08,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2080032740, now seen corresponding path program 1 times [2024-11-28 05:10:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416333223] [2024-11-28 05:10:08,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:08,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:08,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:08,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:10:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:08,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:10:08,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:08,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:08,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416333223] [2024-11-28 05:10:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416333223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:10:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469226524] [2024-11-28 05:10:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:08,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:08,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:08,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:08,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:08,370 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:10:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:08,815 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2024-11-28 05:10:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:08,816 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), 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 11 [2024-11-28 05:10:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:08,818 INFO L225 Difference]: With dead ends: 163 [2024-11-28 05:10:08,820 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 05:10:08,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:08,821 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 63 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:08,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:10:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 05:10:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 91. [2024-11-28 05:10:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 43 states have (on average 2.046511627906977) internal successors, (88), 85 states have internal predecessors, (88), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:10:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2024-11-28 05:10:08,840 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 11 [2024-11-28 05:10:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:08,840 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2024-11-28 05:10:08,841 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:10:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2024-11-28 05:10:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 05:10:08,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:08,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:08,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:09,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:09,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:09,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash -895923568, now seen corresponding path program 1 times [2024-11-28 05:10:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:09,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403069116] [2024-11-28 05:10:09,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:09,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:09,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:09,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:09,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:10:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:09,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:10:09,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:09,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:09,260 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:10:09,328 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:10:09,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:10:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 05:10:09,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:13,659 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:13,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403069116] [2024-11-28 05:10:13,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403069116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:13,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:13,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-28 05:10:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83732954] [2024-11-28 05:10:13,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:13,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:10:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:13,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:10:13,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=40, Unknown=2, NotChecked=12, Total=72 [2024-11-28 05:10:13,662 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:14,310 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2024-11-28 05:10:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2024-11-28 05:10:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:14,312 INFO L225 Difference]: With dead ends: 99 [2024-11-28 05:10:14,312 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 05:10:14,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=23, Invalid=51, Unknown=2, NotChecked=14, Total=90 [2024-11-28 05:10:14,313 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 61 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:14,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 194 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 315 Invalid, 0 Unknown, 110 Unchecked, 0.6s Time] [2024-11-28 05:10:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 05:10:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 05:10:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 90 states have internal predecessors, (97), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 05:10:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-28 05:10:14,322 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 15 [2024-11-28 05:10:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:14,323 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-28 05:10:14,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:14,323 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-28 05:10:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 05:10:14,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:14,324 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:14,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:10:14,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:14,525 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:14,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -895923567, now seen corresponding path program 1 times [2024-11-28 05:10:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598983379] [2024-11-28 05:10:14,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:14,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:14,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:10:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:14,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:10:14,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:14,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:14,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:10:14,883 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:10:14,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:14,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:10:14,947 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:14,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 05:10:14,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:15,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:15,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598983379] [2024-11-28 05:10:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598983379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1406746128] [2024-11-28 05:10:15,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:10:15,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:10:15,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-28 05:10:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:15,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:10:15,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:15,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:10:15,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:15,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:10:15,704 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:15,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 05:10:15,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1406746128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:15,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:15,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-28 05:10:15,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626338404] [2024-11-28 05:10:15,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:15,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:10:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:15,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:10:15,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-28 05:10:15,935 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:17,167 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2024-11-28 05:10:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:10:17,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 15 [2024-11-28 05:10:17,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:17,169 INFO L225 Difference]: With dead ends: 186 [2024-11-28 05:10:17,170 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 05:10:17,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2024-11-28 05:10:17,171 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 118 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:17,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 245 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 198 Unchecked, 1.1s Time] [2024-11-28 05:10:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 05:10:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 133. [2024-11-28 05:10:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 123 states have internal predecessors, (160), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 05:10:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2024-11-28 05:10:17,192 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 15 [2024-11-28 05:10:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:17,193 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2024-11-28 05:10:17,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2024-11-28 05:10:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 05:10:17,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:17,195 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:17,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-28 05:10:17,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:17,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:17,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:17,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1602092369, now seen corresponding path program 1 times [2024-11-28 05:10:17,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:17,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685265500] [2024-11-28 05:10:17,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:17,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:17,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:17,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:10:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:17,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:10:17,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:17,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:17,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685265500] [2024-11-28 05:10:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685265500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019713887] [2024-11-28 05:10:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:17,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:10:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:17,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:10:17,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:17,755 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:17,818 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-28 05:10:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:10:17,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2024-11-28 05:10:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:17,820 INFO L225 Difference]: With dead ends: 88 [2024-11-28 05:10:17,820 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 05:10:17,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:17,821 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:17,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 334 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:10:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 05:10:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-28 05:10:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 05:10:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-28 05:10:17,829 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 15 [2024-11-28 05:10:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:17,829 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-28 05:10:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-28 05:10:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 05:10:17,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:17,831 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:17,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:10:18,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:18,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:18,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash 684574475, now seen corresponding path program 1 times [2024-11-28 05:10:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701316603] [2024-11-28 05:10:18,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:18,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:18,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:18,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:10:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:18,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:10:18,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:18,157 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 15 treesize of output 1 [2024-11-28 05:10:18,181 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 16 treesize of output 8 [2024-11-28 05:10:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:18,194 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:18,194 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:18,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701316603] [2024-11-28 05:10:18,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701316603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:18,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:18,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:18,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814244547] [2024-11-28 05:10:18,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:18,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:18,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:18,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:18,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:18,196 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:10:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:18,364 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-28 05:10:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-28 05:10:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:18,366 INFO L225 Difference]: With dead ends: 95 [2024-11-28 05:10:18,367 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 05:10:18,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:10:18,369 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:18,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 368 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:10:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 05:10:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-11-28 05:10:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 83 states have internal predecessors, (87), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 05:10:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2024-11-28 05:10:18,376 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 20 [2024-11-28 05:10:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:18,376 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2024-11-28 05:10:18,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:10:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2024-11-28 05:10:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 05:10:18,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:18,377 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:18,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:10:18,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:18,579 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:18,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1122879988, now seen corresponding path program 1 times [2024-11-28 05:10:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834369062] [2024-11-28 05:10:18,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:18,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:18,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:10:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:18,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:10:18,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:18,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:18,847 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834369062] [2024-11-28 05:10:18,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834369062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:18,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2024-11-28 05:10:18,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309211568] [2024-11-28 05:10:18,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:18,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:18,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:18,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:18,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:18,849 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:19,088 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2024-11-28 05:10:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-28 05:10:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:19,090 INFO L225 Difference]: With dead ends: 89 [2024-11-28 05:10:19,090 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 05:10:19,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:19,092 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 122 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:19,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 165 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:10:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 05:10:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 05:10:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 82 states have internal predecessors, (85), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 05:10:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2024-11-28 05:10:19,106 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 20 [2024-11-28 05:10:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:19,106 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2024-11-28 05:10:19,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2024-11-28 05:10:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 05:10:19,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:19,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:19,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:10:19,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:19,309 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:19,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1782681151, now seen corresponding path program 1 times [2024-11-28 05:10:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840398898] [2024-11-28 05:10:19,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:19,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:19,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:19,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:19,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:10:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:19,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:10:19,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:19,597 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_33| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_33|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_33| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-28 05:10:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:19,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:19,737 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-11-28 05:10:19,738 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 43 treesize of output 38 [2024-11-28 05:10:19,935 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840398898] [2024-11-28 05:10:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840398898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:19,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [676090125] [2024-11-28 05:10:19,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:19,936 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:19,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:10:19,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:10:19,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-28 05:10:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:20,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:10:20,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:20,386 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_36| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_36|)))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1))) is different from true [2024-11-28 05:10:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:20,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:20,519 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-11-28 05:10:20,519 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 43 treesize of output 38 [2024-11-28 05:10:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [676090125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:20,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-28 05:10:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430387248] [2024-11-28 05:10:20,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:20,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:10:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:20,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:10:20,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=107, Unknown=2, NotChecked=42, Total=182 [2024-11-28 05:10:20,719 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 13 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:10:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:21,811 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2024-11-28 05:10:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:10:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2024-11-28 05:10:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:21,813 INFO L225 Difference]: With dead ends: 136 [2024-11-28 05:10:21,814 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 05:10:21,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=222, Unknown=2, NotChecked=62, Total=342 [2024-11-28 05:10:21,815 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 161 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:21,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 374 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 526 Invalid, 0 Unknown, 288 Unchecked, 0.9s Time] [2024-11-28 05:10:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 05:10:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 82. [2024-11-28 05:10:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 45 states have (on average 1.711111111111111) internal successors, (77), 76 states have internal predecessors, (77), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 05:10:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-28 05:10:21,828 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 23 [2024-11-28 05:10:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:21,828 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-28 05:10:21,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:10:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-28 05:10:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:10:21,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:21,830 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:21,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:10:22,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-28 05:10:22,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:22,231 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:22,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -931351798, now seen corresponding path program 1 times [2024-11-28 05:10:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196043125] [2024-11-28 05:10:22,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:22,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:22,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:22,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:22,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:10:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:22,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:10:22,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:22,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:22,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:10:22,410 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 19 treesize of output 11 [2024-11-28 05:10:22,542 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:10:22,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:10:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:22,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:27,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196043125] [2024-11-28 05:10:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196043125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:27,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:27,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2024-11-28 05:10:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883274462] [2024-11-28 05:10:27,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:27,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:10:27,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:27,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:10:27,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:10:27,286 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:10:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:28,141 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-28 05:10:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:10:28,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-11-28 05:10:28,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:28,142 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:10:28,142 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:10:28,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:10:28,143 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:28,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 330 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:10:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:10:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:10:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 81 states have internal predecessors, (84), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 05:10:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-11-28 05:10:28,154 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 25 [2024-11-28 05:10:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:28,154 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-11-28 05:10:28,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:10:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-11-28 05:10:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:10:28,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:28,155 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:28,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:28,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:28,356 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:28,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -931351797, now seen corresponding path program 1 times [2024-11-28 05:10:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551272075] [2024-11-28 05:10:28,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:28,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:28,358 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:28,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:10:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:28,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:10:28,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:28,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:10:28,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:28,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:10:28,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:28,627 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 28 treesize of output 16 [2024-11-28 05:10:28,723 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:10:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:28,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:10:28,785 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:28,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-28 05:10:28,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:33,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551272075] [2024-11-28 05:10:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551272075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061826947] [2024-11-28 05:10:33,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:10:33,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:10:33,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-28 05:10:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:33,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:10:33,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:33,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:33,259 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 [2024-11-28 05:10:33,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:10:33,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:33,385 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 28 treesize of output 16 [2024-11-28 05:10:33,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:33,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:10:33,502 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:33,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-28 05:10:33,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:37,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061826947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:37,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-28 05:10:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398256140] [2024-11-28 05:10:37,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:37,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:10:37,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:37,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:10:37,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=87, Unknown=2, NotChecked=18, Total=132 [2024-11-28 05:10:37,773 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:38,548 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-28 05:10:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:10:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-28 05:10:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:38,550 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:10:38,550 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:10:38,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=39, Invalid=145, Unknown=2, NotChecked=24, Total=210 [2024-11-28 05:10:38,550 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 5 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:38,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 299 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 95 Unchecked, 0.7s Time] [2024-11-28 05:10:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:10:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 05:10:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 81 states have internal predecessors, (83), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 05:10:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-28 05:10:38,556 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 25 [2024-11-28 05:10:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:38,556 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-28 05:10:38,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-28 05:10:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:10:38,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:38,557 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:38,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-28 05:10:38,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:10:38,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:38,961 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:38,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1436910423, now seen corresponding path program 1 times [2024-11-28 05:10:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646363909] [2024-11-28 05:10:38,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:38,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:38,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:38,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:38,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:10:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:39,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:10:39,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:39,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:39,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:10:39,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:39,161 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646363909] [2024-11-28 05:10:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646363909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209999476] [2024-11-28 05:10:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:39,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:39,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:39,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:39,163 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:39,315 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-28 05:10:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-28 05:10:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:39,316 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:10:39,316 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:10:39,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:10:39,317 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:39,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:10:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:10:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-28 05:10:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 74 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:10:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2024-11-28 05:10:39,321 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 25 [2024-11-28 05:10:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:39,322 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2024-11-28 05:10:39,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2024-11-28 05:10:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 05:10:39,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:39,323 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:39,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:10:39,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:39,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:39,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash -412676065, now seen corresponding path program 1 times [2024-11-28 05:10:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66285662] [2024-11-28 05:10:39,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:39,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:39,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:39,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:39,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:10:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:39,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:10:39,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:39,724 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:39,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:39,752 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 15 treesize of output 1 [2024-11-28 05:10:43,844 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_12| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_3|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_12|))) is different from true [2024-11-28 05:10:43,966 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:10:43,966 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 36 treesize of output 35 [2024-11-28 05:10:44,040 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 27 treesize of output 15 [2024-11-28 05:10:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:10:44,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:44,157 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2024-11-28 05:10:44,157 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 23 treesize of output 22 [2024-11-28 05:10:44,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66285662] [2024-11-28 05:10:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66285662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764114230] [2024-11-28 05:10:44,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:10:44,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:10:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-28 05:10:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:44,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:10:44,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:44,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:44,503 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:44,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:44,520 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 15 treesize of output 1 [2024-11-28 05:10:48,556 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_14| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_14| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_4|)))) is different from true [2024-11-28 05:10:48,661 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:10:48,661 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 36 treesize of output 35 [2024-11-28 05:10:48,688 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 27 treesize of output 15 [2024-11-28 05:10:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:10:48,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:48,728 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2024-11-28 05:10:48,729 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 23 treesize of output 22 [2024-11-28 05:10:48,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [764114230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:48,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:48,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2024-11-28 05:10:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369306412] [2024-11-28 05:10:48,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:48,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:10:48,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:48,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:10:48,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=146, Unknown=11, NotChecked=50, Total=240 [2024-11-28 05:10:48,818 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:10:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:58,019 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2024-11-28 05:10:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:10:58,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-11-28 05:10:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:58,021 INFO L225 Difference]: With dead ends: 113 [2024-11-28 05:10:58,021 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 05:10:58,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=72, Invalid=340, Unknown=16, NotChecked=78, Total=506 [2024-11-28 05:10:58,022 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 95 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:58,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 431 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 496 Invalid, 0 Unknown, 228 Unchecked, 0.9s Time] [2024-11-28 05:10:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 05:10:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2024-11-28 05:10:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.625) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:10:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-11-28 05:10:58,028 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 28 [2024-11-28 05:10:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:58,028 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-11-28 05:10:58,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 05:10:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-11-28 05:10:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 05:10:58,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:58,030 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:58,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:10:58,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:58,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:58,431 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:10:58,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash -412676064, now seen corresponding path program 1 times [2024-11-28 05:10:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620056441] [2024-11-28 05:10:58,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:58,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:58,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:58,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:58,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:10:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:58,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:10:58,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:58,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:58,667 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:58,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:58,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:58,719 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 15 treesize of output 1 [2024-11-28 05:10:59,083 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:10:59,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 05:10:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 05:10:59,170 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 25 treesize of output 13 [2024-11-28 05:10:59,180 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 7 treesize of output 3 [2024-11-28 05:10:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:59,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:59,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:10:59,416 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 50 treesize of output 54 [2024-11-28 05:10:59,496 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_216 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_216) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset|))) (forall ((v_prenex_7 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_7) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (or (forall ((v_ArrVal_217 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_217) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (forall ((v_ArrVal_216 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_216) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv0 32))))) is different from false [2024-11-28 05:10:59,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:59,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620056441] [2024-11-28 05:10:59,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620056441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1261545675] [2024-11-28 05:10:59,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:59,535 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:59,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:10:59,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:10:59,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-28 05:10:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:59,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:10:59,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:59,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:10:59,760 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:59,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:10:59,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:10:59,778 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 15 treesize of output 1 [2024-11-28 05:10:59,970 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:10:59,971 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 50 treesize of output 45 [2024-11-28 05:10:59,979 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 24 treesize of output 11 [2024-11-28 05:11:00,019 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 25 treesize of output 13 [2024-11-28 05:11:00,029 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 7 treesize of output 3 [2024-11-28 05:11:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:00,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:00,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:11:00,099 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 50 treesize of output 54 [2024-11-28 05:11:00,192 WARN L851 $PredicateComparison]: unable to prove that (and (or (forall ((v_ArrVal_239 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_239) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (forall ((v_ArrVal_240 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_240) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (forall ((v_prenex_9 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_prenex_9) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_240 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_240) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset|)))) is different from false [2024-11-28 05:11:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1261545675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:00,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:00,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2024-11-28 05:11:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830955098] [2024-11-28 05:11:00,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:00,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:11:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:00,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:11:00,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=178, Unknown=2, NotChecked=54, Total=272 [2024-11-28 05:11:00,234 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:04,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:09,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:13,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:13,820 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2024-11-28 05:11:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:11:13,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-11-28 05:11:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:13,822 INFO L225 Difference]: With dead ends: 124 [2024-11-28 05:11:13,822 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:11:13,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=385, Unknown=2, NotChecked=82, Total=552 [2024-11-28 05:11:13,823 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 81 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:13,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 553 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 605 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2024-11-28 05:11:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:11:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-28 05:11:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 78 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2024-11-28 05:11:13,829 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 28 [2024-11-28 05:11:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:13,829 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-28 05:11:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2024-11-28 05:11:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 05:11:13,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:13,831 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:13,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:14,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-28 05:11:14,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:11:14,232 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:14,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706688, now seen corresponding path program 1 times [2024-11-28 05:11:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:14,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805801875] [2024-11-28 05:11:14,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:14,236 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:14,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:11:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:14,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:11:14,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:11:14,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:14,395 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:14,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805801875] [2024-11-28 05:11:14,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805801875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:14,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:14,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:11:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312299301] [2024-11-28 05:11:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:14,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:11:14,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:14,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:11:14,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:11:14,397 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:14,651 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2024-11-28 05:11:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:11:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-28 05:11:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:14,652 INFO L225 Difference]: With dead ends: 85 [2024-11-28 05:11:14,653 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 05:11:14,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:14,653 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 25 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:14,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:11:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 05:11:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-28 05:11:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 77 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-28 05:11:14,659 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 30 [2024-11-28 05:11:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:14,659 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-28 05:11:14,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-28 05:11:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 05:11:14,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:14,660 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:14,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:11:14,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:14,864 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:14,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706687, now seen corresponding path program 1 times [2024-11-28 05:11:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487034543] [2024-11-28 05:11:14,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:14,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:14,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:14,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:14,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:11:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:14,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:11:14,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:11:15,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-28 05:11:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:11:15,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487034543] [2024-11-28 05:11:15,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487034543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:15,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:15,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-28 05:11:15,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283293831] [2024-11-28 05:11:15,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:15,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:11:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:15,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:11:15,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:11:15,411 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 05:11:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:15,922 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-28 05:11:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:11:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2024-11-28 05:11:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:15,923 INFO L225 Difference]: With dead ends: 84 [2024-11-28 05:11:15,924 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 05:11:15,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:11:15,924 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:15,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 324 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:11:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 05:11:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-28 05:11:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-28 05:11:15,928 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 30 [2024-11-28 05:11:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:15,928 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-28 05:11:15,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 05:11:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-28 05:11:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:11:15,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:15,929 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:15,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:16,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:16,130 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:16,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234894, now seen corresponding path program 1 times [2024-11-28 05:11:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841594964] [2024-11-28 05:11:16,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:16,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:16,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:16,133 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:16,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:11:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:16,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:11:16,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:16,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:11:16,337 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:11:16,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:11:16,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:11:16,377 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 15 treesize of output 1 [2024-11-28 05:11:16,437 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 16 treesize of output 8 [2024-11-28 05:11:16,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:11:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:16,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:16,761 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841594964] [2024-11-28 05:11:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841594964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611927565] [2024-11-28 05:11:16,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:16,761 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:11:16,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:11:16,765 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:11:16,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-28 05:11:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:16,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 05:11:16,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:16,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:11:17,013 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:11:17,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:11:17,023 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 15 treesize of output 1 [2024-11-28 05:11:17,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:11:17,058 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 16 treesize of output 8 [2024-11-28 05:11:17,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:11:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:17,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:17,218 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_320 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_320) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) is different from false [2024-11-28 05:11:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1611927565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:17,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2024-11-28 05:11:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180682359] [2024-11-28 05:11:17,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:17,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:11:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:17,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:11:17,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=143, Unknown=10, NotChecked=24, Total=210 [2024-11-28 05:11:17,231 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:21,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:25,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:30,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:34,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:34,397 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2024-11-28 05:11:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:11:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-11-28 05:11:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:34,399 INFO L225 Difference]: With dead ends: 119 [2024-11-28 05:11:34,399 INFO L226 Difference]: Without dead ends: 119 [2024-11-28 05:11:34,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=333, Unknown=13, NotChecked=38, Total=462 [2024-11-28 05:11:34,400 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 90 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:34,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 472 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 4 Unknown, 0 Unchecked, 16.9s Time] [2024-11-28 05:11:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-28 05:11:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2024-11-28 05:11:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 77 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-28 05:11:34,409 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 31 [2024-11-28 05:11:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:34,409 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-28 05:11:34,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-28 05:11:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:11:34,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:34,412 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:34,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:34,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:34,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:11:34,813 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:34,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234347, now seen corresponding path program 1 times [2024-11-28 05:11:34,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:34,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226914638] [2024-11-28 05:11:34,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:34,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:34,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:34,816 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:34,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:11:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:34,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:11:34,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:35,005 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 19 treesize of output 11 [2024-11-28 05:11:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:11:35,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:35,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226914638] [2024-11-28 05:11:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226914638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443491509] [2024-11-28 05:11:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:35,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:11:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:35,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:11:35,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:11:35,029 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:35,431 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-11-28 05:11:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-28 05:11:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:35,432 INFO L225 Difference]: With dead ends: 88 [2024-11-28 05:11:35,433 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:11:35,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:11:35,433 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 10 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:35,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 216 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:11:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:11:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2024-11-28 05:11:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.5) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-28 05:11:35,440 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 31 [2024-11-28 05:11:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:35,441 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-28 05:11:35,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-28 05:11:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:11:35,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:35,444 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:35,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:11:35,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:35,645 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:35,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234346, now seen corresponding path program 1 times [2024-11-28 05:11:35,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:35,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691367404] [2024-11-28 05:11:35,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:35,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:35,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:35,648 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:35,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:11:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:35,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:11:35,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:35,910 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 15 [2024-11-28 05:11:35,914 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 32 treesize of output 16 [2024-11-28 05:11:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:11:35,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:35,972 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691367404] [2024-11-28 05:11:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691367404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:35,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546547198] [2024-11-28 05:11:35,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:35,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:11:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:35,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:11:35,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:11:35,974 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:36,616 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-11-28 05:11:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:36,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-28 05:11:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:36,617 INFO L225 Difference]: With dead ends: 88 [2024-11-28 05:11:36,618 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:11:36,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:11:36,618 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 10 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:36,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 248 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:11:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:11:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-28 05:11:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 75 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:11:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-28 05:11:36,627 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 31 [2024-11-28 05:11:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:36,627 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-28 05:11:36,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-28 05:11:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 05:11:36,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:36,629 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:36,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:11:36,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:36,830 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:11:36,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1088706739, now seen corresponding path program 1 times [2024-11-28 05:11:36,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:36,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488815418] [2024-11-28 05:11:36,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:36,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:36,835 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:36,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:11:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:36,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:11:36,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:36,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:11:37,027 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:11:37,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:11:37,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:11:37,070 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 15 treesize of output 1 [2024-11-28 05:11:37,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:11:41,186 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_13| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_13|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|))) is different from true [2024-11-28 05:11:41,489 INFO L349 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2024-11-28 05:11:41,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 53 [2024-11-28 05:11:41,706 INFO L349 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2024-11-28 05:11:41,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 05:11:41,834 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 16 treesize of output 8 [2024-11-28 05:11:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 05:11:41,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:41,993 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 8 treesize of output 4 [2024-11-28 05:11:42,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:42,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488815418] [2024-11-28 05:11:42,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488815418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:42,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2136355090] [2024-11-28 05:11:42,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:42,683 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:11:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:11:42,685 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:11:42,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-28 05:11:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:42,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:11:42,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:42,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:11:42,990 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:11:42,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:11:43,058 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 15 treesize of output 1 [2024-11-28 05:11:43,488 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:11:43,489 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 32 treesize of output 31 [2024-11-28 05:11:43,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 05:11:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:43,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2136355090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:47,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:47,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 24 [2024-11-28 05:11:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300211283] [2024-11-28 05:11:47,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:47,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:11:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:47,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:11:47,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=721, Unknown=22, NotChecked=54, Total=870 [2024-11-28 05:11:47,849 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:11:51,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:58,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:02,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:06,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:10,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:15,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:15,487 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2024-11-28 05:12:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:12:15,487 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2024-11-28 05:12:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:15,488 INFO L225 Difference]: With dead ends: 127 [2024-11-28 05:12:15,488 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 05:12:15,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=199, Invalid=1581, Unknown=30, NotChecked=82, Total=1892 [2024-11-28 05:12:15,489 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 124 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 34 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:15,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 840 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 958 Invalid, 6 Unknown, 126 Unchecked, 26.5s Time] [2024-11-28 05:12:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 05:12:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2024-11-28 05:12:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:12:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2024-11-28 05:12:15,494 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 32 [2024-11-28 05:12:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:15,495 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2024-11-28 05:12:15,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 20 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:12:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2024-11-28 05:12:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 05:12:15,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:15,496 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 05:12:15,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 05:12:15,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-28 05:12:15,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:12:15,897 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:12:15,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 738912307, now seen corresponding path program 1 times [2024-11-28 05:12:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008477300] [2024-11-28 05:12:15,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:15,899 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:12:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:16,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:12:16,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:16,050 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 19 treesize of output 11 [2024-11-28 05:12:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:12:16,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:16,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:12:16,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008477300] [2024-11-28 05:12:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008477300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:16,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162089481] [2024-11-28 05:12:16,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:16,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:12:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:12:16,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:12:16,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:12:16,077 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:12:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:16,395 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2024-11-28 05:12:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-28 05:12:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:16,397 INFO L225 Difference]: With dead ends: 90 [2024-11-28 05:12:16,397 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 05:12:16,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:12:16,397 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:16,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:12:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 05:12:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-28 05:12:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.423728813559322) internal successors, (84), 81 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 05:12:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2024-11-28 05:12:16,406 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 33 [2024-11-28 05:12:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:16,406 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2024-11-28 05:12:16,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:12:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2024-11-28 05:12:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 05:12:16,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:16,407 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:12:16,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:12:16,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:16,608 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:12:16,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014625, now seen corresponding path program 1 times [2024-11-28 05:12:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809615758] [2024-11-28 05:12:16,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:16,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:16,611 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 05:12:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:16,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:12:16,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:16,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:12:16,899 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:12:16,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:12:16,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:12:16,944 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 15 treesize of output 1 [2024-11-28 05:12:21,075 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15|)))) is different from true [2024-11-28 05:12:21,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:12:25,392 INFO L349 Elim1Store]: treesize reduction 80, result has 25.2 percent of original size [2024-11-28 05:12:25,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 80 [2024-11-28 05:12:25,407 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 59 treesize of output 44 [2024-11-28 05:12:25,613 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 27 treesize of output 19 [2024-11-28 05:12:25,742 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:12:25,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2024-11-28 05:12:25,978 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:12:25,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:12:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-11-28 05:12:25,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:34,977 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_440 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |c_ULTIMATE.start_entry_point_#t~ret52#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_440) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (_ bv0 1))) is different from false [2024-11-28 05:12:35,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2024-11-28 05:12:35,043 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret52#1.base_46| (_ BitVec 32)) (v_ArrVal_440 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret52#1.base_46| (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |v_ULTIMATE.start_entry_point_#t~ret52#1.base_46|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_440) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2024-11-28 05:12:35,047 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:12:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809615758] [2024-11-28 05:12:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809615758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [316455345] [2024-11-28 05:12:35,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:12:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:12:35,049 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:12:35,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 05:12:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:35,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 05:12:35,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:35,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:12:39,688 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:12:39,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:12:39,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:12:39,804 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 15 treesize of output 1 [2024-11-28 05:12:44,094 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_30| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_30|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_30|))) is different from true [2024-11-28 05:12:44,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:12:56,633 INFO L349 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2024-11-28 05:12:56,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 80 [2024-11-28 05:12:56,646 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 59 treesize of output 44 [2024-11-28 05:12:57,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2024-11-28 05:12:57,606 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-11-28 05:12:57,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 46 [2024-11-28 05:12:57,714 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:12:57,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:12:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-11-28 05:12:57,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:03,012 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |c_ULTIMATE.start_entry_point_#t~ret52#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_471) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))))) is different from false [2024-11-28 05:13:03,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2024-11-28 05:13:03,069 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_entry_point_#t~ret52#1.base_50| (_ BitVec 32))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base|) |c_ULTIMATE.start_entry_point_#t~mem51#1.offset| |v_ULTIMATE.start_entry_point_#t~ret52#1.base_50|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_471) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) |v_ULTIMATE.start_entry_point_#t~ret52#1.base_50|)) is different from false [2024-11-28 05:13:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [316455345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:03,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:13:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2024-11-28 05:13:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140425088] [2024-11-28 05:13:03,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:03,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 05:13:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:13:03,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 05:13:03,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=956, Unknown=13, NotChecked=402, Total=1482 [2024-11-28 05:13:03,074 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 05:13:07,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:11,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:27,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:31,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:43,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:45,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:47,379 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2024-11-28 05:13:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 05:13:47,380 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 37 [2024-11-28 05:13:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:47,381 INFO L225 Difference]: With dead ends: 96 [2024-11-28 05:13:47,381 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 05:13:47,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=218, Invalid=1681, Unknown=17, NotChecked=534, Total=2450 [2024-11-28 05:13:47,382 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 75 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:47,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 548 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 862 Invalid, 4 Unknown, 194 Unchecked, 23.0s Time] [2024-11-28 05:13:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 05:13:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-11-28 05:13:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 84 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 05:13:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2024-11-28 05:13:47,388 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 37 [2024-11-28 05:13:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:47,388 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2024-11-28 05:13:47,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 05:13:47,389 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2024-11-28 05:13:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 05:13:47,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:47,390 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:13:47,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-28 05:13:47,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:47,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:47,791 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:13:47,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:47,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014624, now seen corresponding path program 1 times [2024-11-28 05:13:47,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:13:47,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096038825] [2024-11-28 05:13:47,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:47,795 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:47,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:13:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:47,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 05:13:47,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:47,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:13:48,098 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:13:48,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:13:48,142 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 15 treesize of output 1 [2024-11-28 05:13:48,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:13:52,349 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_32| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_18| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_32| (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_32|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_18|)))) is different from true [2024-11-28 05:13:52,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:13:52,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:13:52,815 INFO L349 Elim1Store]: treesize reduction 80, result has 25.2 percent of original size [2024-11-28 05:13:52,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 100 [2024-11-28 05:13:52,827 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 83 treesize of output 69 [2024-11-28 05:13:53,373 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-28 05:13:53,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 34 [2024-11-28 05:13:53,547 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:13:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:13:53,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:13:53,594 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:13:53,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:13:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2024-11-28 05:13:53,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:54,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:13:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096038825] [2024-11-28 05:13:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096038825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1314234464] [2024-11-28 05:13:54,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:54,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:13:54,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:13:54,122 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:13:54,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-28 05:13:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:54,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 05:13:54,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:54,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:13:54,769 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:13:54,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:13:54,875 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 15 treesize of output 1 [2024-11-28 05:13:54,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:13:55,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:13:55,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:13:56,105 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-28 05:13:56,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 72 [2024-11-28 05:13:56,171 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-11-28 05:13:56,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 32 [2024-11-28 05:13:56,963 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:13:56,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 30 [2024-11-28 05:13:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:13:57,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:13:57,051 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:13:57,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:13:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-28 05:13:57,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1314234464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:01,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:14:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2024-11-28 05:14:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266512957] [2024-11-28 05:14:01,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:01,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 05:14:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:01,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 05:14:01,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1083, Unknown=2, NotChecked=134, Total=1332 [2024-11-28 05:14:01,421 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 05:14:05,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:09,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:17,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:21,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:27,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:32,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:37,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:41,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:41,485 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2024-11-28 05:14:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:14:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 37 [2024-11-28 05:14:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:41,487 INFO L225 Difference]: With dead ends: 122 [2024-11-28 05:14:41,487 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:14:41,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=218, Invalid=1857, Unknown=3, NotChecked=178, Total=2256 [2024-11-28 05:14:41,490 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 98 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 27 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:41,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 786 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1052 Invalid, 8 Unknown, 241 Unchecked, 35.0s Time] [2024-11-28 05:14:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:14:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 94. [2024-11-28 05:14:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.403225806451613) internal successors, (87), 84 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 05:14:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2024-11-28 05:14:41,496 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 37 [2024-11-28 05:14:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:41,496 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2024-11-28 05:14:41,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 26 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 05:14:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2024-11-28 05:14:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:14:41,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:41,497 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 05:14:41,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-28 05:14:41,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 05:14:41,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:41,902 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:14:41,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1229276979, now seen corresponding path program 1 times [2024-11-28 05:14:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447325267] [2024-11-28 05:14:41,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:41,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:41,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:41,905 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:41,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:14:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:42,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:14:42,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:42,466 INFO L349 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2024-11-28 05:14:42,467 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 23 treesize of output 23 [2024-11-28 05:14:42,473 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 21 treesize of output 13 [2024-11-28 05:14:42,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-28 05:14:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:14:42,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:43,285 INFO L349 Elim1Store]: treesize reduction 3, result has 72.7 percent of original size [2024-11-28 05:14:43,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2024-11-28 05:14:43,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-11-28 05:14:43,310 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 8 treesize of output 4 [2024-11-28 05:14:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:14:43,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447325267] [2024-11-28 05:14:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447325267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:43,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:14:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-28 05:14:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613721290] [2024-11-28 05:14:43,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:43,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:14:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:43,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:14:43,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:14:43,528 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:14:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:44,510 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-11-28 05:14:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:14:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-28 05:14:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:44,511 INFO L225 Difference]: With dead ends: 97 [2024-11-28 05:14:44,511 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 05:14:44,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:14:44,512 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 87 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:44,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 273 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:14:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 05:14:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-28 05:14:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 05:14:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2024-11-28 05:14:44,516 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 36 [2024-11-28 05:14:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:44,517 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2024-11-28 05:14:44,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:14:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2024-11-28 05:14:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 05:14:44,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:44,518 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:44,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:14:44,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:44,719 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:14:44,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1653548802, now seen corresponding path program 1 times [2024-11-28 05:14:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:44,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048311954] [2024-11-28 05:14:44,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:44,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:44,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:44,721 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:44,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:14:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:44,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 05:14:44,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:44,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:14:44,963 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:14:44,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:14:44,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:14:45,013 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 15 treesize of output 1 [2024-11-28 05:14:49,158 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40|))) is different from true [2024-11-28 05:14:49,490 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2024-11-28 05:14:49,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 64 [2024-11-28 05:14:49,499 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 62 treesize of output 52 [2024-11-28 05:14:49,767 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-28 05:14:49,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-28 05:14:49,774 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 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 05:14:49,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:14,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:15:14,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 849 treesize of output 729 [2024-11-28 05:15:14,737 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:15:14,745 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 242 treesize of output 210 [2024-11-28 05:15:14,754 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:15:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:15:15,354 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048311954] [2024-11-28 05:15:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048311954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:15,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:15:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2024-11-28 05:15:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744320659] [2024-11-28 05:15:15,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:15,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:15:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:15,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:15:15,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=4, NotChecked=40, Total=506 [2024-11-28 05:15:15,356 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 05:15:29,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:16:02,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 05:16:05,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 05:16:09,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:12,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:17,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:21,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:25,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:29,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:33,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 05:16:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:37,303 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-28 05:16:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:16:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2024-11-28 05:16:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:37,305 INFO L225 Difference]: With dead ends: 93 [2024-11-28 05:16:37,305 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 05:16:37,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=139, Invalid=912, Unknown=9, NotChecked=62, Total=1122 [2024-11-28 05:16:37,306 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 74 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 21 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 46.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:37,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 505 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 713 Invalid, 7 Unknown, 87 Unchecked, 46.3s Time] [2024-11-28 05:16:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 05:16:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-11-28 05:16:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 82 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:16:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-11-28 05:16:37,311 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 37 [2024-11-28 05:16:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:37,312 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-11-28 05:16:37,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 05:16:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-11-28 05:16:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 05:16:37,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:37,313 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:37,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:37,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:37,514 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:16:37,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash 219174838, now seen corresponding path program 1 times [2024-11-28 05:16:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156509722] [2024-11-28 05:16:37,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:37,517 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:37,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:16:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:37,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:16:37,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:38,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:16:39,758 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:16:39,758 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 23 treesize of output 15 [2024-11-28 05:16:44,675 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:16:44,676 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 48 treesize of output 45 [2024-11-28 05:16:45,705 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 21 [2024-11-28 05:16:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:16:55,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:57,357 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:57,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156509722] [2024-11-28 05:16:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156509722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907067186] [2024-11-28 05:16:57,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:57,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:16:57,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:16:57,360 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:16:57,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-28 05:16:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:57,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:16:57,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:08,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:09,409 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-28 05:17:09,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-28 05:17:14,318 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 05:17:14,318 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 48 treesize of output 45 [2024-11-28 05:17:14,784 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 39 treesize of output 23 [2024-11-28 05:17:20,353 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_#t~mem57#1.base_19| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~mem57#1.base_19|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~a10~0#1.base_44|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_#t~mem57#1.base_19| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_44| (_ bv0 1)) |c_#valid|))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1))) is different from true [2024-11-28 05:17:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:17:20,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:20,704 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_627 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_entry_point_#t~mem51#1.base| v_ArrVal_627) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 1)) |c_ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|)) is different from false [2024-11-28 05:17:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907067186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:20,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:17:20,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 26 [2024-11-28 05:17:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992632182] [2024-11-28 05:17:20,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:20,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:17:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:17:20,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:17:20,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=875, Unknown=13, NotChecked=122, Total=1122 [2024-11-28 05:17:20,815 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 27 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:17:25,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:29,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:37,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:42,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:55,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:00,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:16,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:25,718 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2024-11-28 05:18:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:18:25,719 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 38 [2024-11-28 05:18:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:25,720 INFO L225 Difference]: With dead ends: 95 [2024-11-28 05:18:25,720 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 05:18:25,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=237, Invalid=1914, Unknown=19, NotChecked=182, Total=2352 [2024-11-28 05:18:25,721 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:25,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 488 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 930 Invalid, 7 Unknown, 90 Unchecked, 37.0s Time] [2024-11-28 05:18:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 05:18:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-28 05:18:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 69 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:18:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-28 05:18:25,727 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 38 [2024-11-28 05:18:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:25,727 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-28 05:18:25,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 05:18:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-28 05:18:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 05:18:25,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:25,728 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:18:25,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-28 05:18:25,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-28 05:18:26,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:26,129 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:18:26,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942818, now seen corresponding path program 1 times [2024-11-28 05:18:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:18:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846202972] [2024-11-28 05:18:26,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:26,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:26,132 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:26,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 05:18:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:26,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:18:26,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:26,553 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:18:26,787 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:18:26,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:18:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:18:26,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:18:26,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:18:26,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846202972] [2024-11-28 05:18:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846202972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:26,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:18:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10547767] [2024-11-28 05:18:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:26,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:18:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:18:26,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:18:26,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2024-11-28 05:18:26,932 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:18:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:28,081 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-11-28 05:18:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:18:28,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-28 05:18:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:28,083 INFO L225 Difference]: With dead ends: 78 [2024-11-28 05:18:28,083 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 05:18:28,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-11-28 05:18:28,084 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:28,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 109 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 87 Unchecked, 1.1s Time] [2024-11-28 05:18:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 05:18:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-28 05:18:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 68 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:18:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-28 05:18:28,088 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 40 [2024-11-28 05:18:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:28,088 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-28 05:18:28,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:18:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-28 05:18:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 05:18:28,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:28,089 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:18:28,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 05:18:28,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:28,289 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:18:28,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942817, now seen corresponding path program 1 times [2024-11-28 05:18:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:18:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519693673] [2024-11-28 05:18:28,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:28,292 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:28,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:18:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:28,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:18:28,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:29,491 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:18:29,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:18:29,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:18:29,666 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:18:29,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:18:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 2 not checked. [2024-11-28 05:18:30,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:18:35,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:18:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519693673] [2024-11-28 05:18:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519693673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:18:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [335214675] [2024-11-28 05:18:35,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:35,311 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:18:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:18:35,313 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:18:35,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-28 05:18:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:35,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 05:18:35,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:36,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:18:36,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:18:37,653 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:18:37,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:18:37,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:18:38,152 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 15 treesize of output 1 [2024-11-28 05:18:38,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:39,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:18:44,390 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:18:44,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 05:18:45,182 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-28 05:18:45,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 62 [2024-11-28 05:18:45,424 INFO L349 Elim1Store]: treesize reduction 29, result has 31.0 percent of original size [2024-11-28 05:18:45,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2024-11-28 05:18:47,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:18:47,925 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:18:47,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20 [2024-11-28 05:18:48,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:18:48,577 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 18 treesize of output 13 [2024-11-28 05:18:48,692 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:18:48,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:18:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2024-11-28 05:18:49,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:18:56,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [335214675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:18:56,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:18:56,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22] total 26 [2024-11-28 05:18:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213484673] [2024-11-28 05:18:56,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:18:56,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:18:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:18:56,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:18:56,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=4, NotChecked=58, Total=992 [2024-11-28 05:18:56,563 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 27 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 05:19:01,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:19:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:12,551 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-28 05:19:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:19:12,552 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 40 [2024-11-28 05:19:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:12,553 INFO L225 Difference]: With dead ends: 112 [2024-11-28 05:19:12,553 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 05:19:12,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=4, NotChecked=86, Total=2070 [2024-11-28 05:19:12,554 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:12,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 598 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 912 Invalid, 1 Unknown, 108 Unchecked, 12.4s Time] [2024-11-28 05:19:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 05:19:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2024-11-28 05:19:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 67 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:19:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-11-28 05:19:12,559 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 40 [2024-11-28 05:19:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:12,559 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-11-28 05:19:12,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 22 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-28 05:19:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-11-28 05:19:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 05:19:12,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:12,560 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:19:12,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 05:19:12,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-28 05:19:12,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:19:12,961 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:19:12,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511044, now seen corresponding path program 1 times [2024-11-28 05:19:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:19:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303829391] [2024-11-28 05:19:12,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:12,964 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:12,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 05:19:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:13,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:19:13,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:13,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-28 05:19:13,638 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-11-28 05:19:13,639 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 18 treesize of output 24 [2024-11-28 05:19:14,031 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-28 05:19:14,032 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:19:14,289 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 19 treesize of output 11 [2024-11-28 05:19:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:19:14,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:19:14,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:19:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303829391] [2024-11-28 05:19:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303829391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:19:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802812341] [2024-11-28 05:19:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:19:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:19:14,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:19:14,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:19:14,428 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:19:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:17,053 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2024-11-28 05:19:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:19:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2024-11-28 05:19:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:17,054 INFO L225 Difference]: With dead ends: 92 [2024-11-28 05:19:17,054 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 05:19:17,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:19:17,055 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:17,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 236 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 05:19:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 05:19:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2024-11-28 05:19:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 73 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 05:19:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2024-11-28 05:19:17,059 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 41 [2024-11-28 05:19:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:17,059 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2024-11-28 05:19:17,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 05:19:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2024-11-28 05:19:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 05:19:17,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:17,060 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 05:19:17,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 05:19:17,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:17,261 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-28 05:19:17,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511045, now seen corresponding path program 1 times [2024-11-28 05:19:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:19:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457244438] [2024-11-28 05:19:17,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:17,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:17,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:17,264 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:17,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0752881-35ce-4855-a063-9a5569a109f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 05:19:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:17,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 05:19:17,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:17,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:19:17,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:19:18,382 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:19:18,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:19:18,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:19:18,723 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 15 treesize of output 1 [2024-11-28 05:19:19,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:19:19,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:19:20,877 INFO L349 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2024-11-28 05:19:20,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2024-11-28 05:19:21,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:19:21,906 INFO L349 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2024-11-28 05:19:21,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 92 [2024-11-28 05:19:22,206 INFO L349 Elim1Store]: treesize reduction 29, result has 31.0 percent of original size [2024-11-28 05:19:22,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2024-11-28 05:19:22,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:19:25,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-28 05:19:25,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:19:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:19:28,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:19:28,478 INFO L349 Elim1Store]: treesize reduction 18, result has 58.1 percent of original size [2024-11-28 05:19:28,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 43 [2024-11-28 05:19:33,261 INFO L349 Elim1Store]: treesize reduction 224, result has 45.2 percent of original size [2024-11-28 05:19:33,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 247 treesize of output 354 [2024-11-28 05:19:33,653 INFO L224 Elim1Store]: Index analysis took 284 ms [2024-11-28 05:19:35,404 INFO L349 Elim1Store]: treesize reduction 144, result has 44.8 percent of original size [2024-11-28 05:19:35,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 141 treesize of output 228 [2024-11-28 05:19:37,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:19:39,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-28 05:19:42,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:19:42,452 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:19:42,452 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 11 treesize of output 7 [2024-11-28 05:19:42,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:19:43,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:01,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:01,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:03,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:03,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:04,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:04,269 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:20:04,269 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 11 treesize of output 7 [2024-11-28 05:20:08,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:13,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:13,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:20:15,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3