./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.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_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/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_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/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_1377b6da-2844-495b-ba12-4e7f724c98d5/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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:50:06,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:50:06,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:50:06,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:50:06,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:50:06,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:50:06,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:50:06,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:50:06,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:50:06,541 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:50:06,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:50:06,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:50:06,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:50:06,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:50:06,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:50:06,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:50:06,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:50:06,544 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:06,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:06,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:06,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:50:06,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:50:06,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:50:06,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:50:06,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:50:06,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:50:06,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:50:06,546 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_1377b6da-2844-495b-ba12-4e7f724c98d5/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 -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2024-11-28 04:50:06,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:50:06,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:50:06,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:50:06,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:50:06,912 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:50:06,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-11-28 04:50:09,933 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/7fababe27/adb5edb458a2426e9543a2f76a47323f/FLAG51a87875e [2024-11-28 04:50:10,383 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:50:10,384 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-11-28 04:50:10,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/7fababe27/adb5edb458a2426e9543a2f76a47323f/FLAG51a87875e [2024-11-28 04:50:10,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/7fababe27/adb5edb458a2426e9543a2f76a47323f [2024-11-28 04:50:10,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:50:10,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:50:10,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:10,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:50:10,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:50:10,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:10" (1/1) ... [2024-11-28 04:50:10,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad9b186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:10, skipping insertion in model container [2024-11-28 04:50:10,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:10" (1/1) ... [2024-11-28 04:50:10,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:50:11,029 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 04:50:11,064 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 04:50:11,070 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 04:50:11,075 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,081 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,116 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 04:50:11,116 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 04:50:11,119 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 04:50:11,119 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 04:50:11,122 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 04:50:11,123 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 04:50:11,124 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 04:50:11,127 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 04:50:11,136 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 04:50:11,141 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,142 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,143 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,144 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:11,148 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 04:50:11,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:11,177 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 04:50:11,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@228d4a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:11, skipping insertion in model container [2024-11-28 04:50:11,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:11,185 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 04:50:11,187 INFO L158 Benchmark]: Toolchain (without parser) took 666.48ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 71.1MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:50:11,188 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:50:11,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.91ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 71.1MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:50:11,189 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.91ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 71.1MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 778]: 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_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/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_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/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_1377b6da-2844-495b-ba12-4e7f724c98d5/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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:50:13,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:50:13,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 04:50:13,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:50:13,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:50:13,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:50:13,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:50:13,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:50:13,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:50:13,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:50:13,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:50:13,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:50:13,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:50:13,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:50:13,919 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:50:13,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:50:13,920 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:50:13,921 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:50:13,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:50:13,923 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:13,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:13,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:13,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:50:13,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:50:13,924 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_1377b6da-2844-495b-ba12-4e7f724c98d5/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 -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2024-11-28 04:50:14,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:50:14,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:50:14,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:50:14,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:50:14,241 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:50:14,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-11-28 04:50:17,118 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9b29c4e83/f4c04acaadb046daace66ba03ed79294/FLAGe4ed687ce [2024-11-28 04:50:17,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:50:17,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-11-28 04:50:17,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9b29c4e83/f4c04acaadb046daace66ba03ed79294/FLAGe4ed687ce [2024-11-28 04:50:17,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9b29c4e83/f4c04acaadb046daace66ba03ed79294 [2024-11-28 04:50:17,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:50:17,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:50:17,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:17,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:50:17,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:50:17,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:17" (1/1) ... [2024-11-28 04:50:17,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd947ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:17, skipping insertion in model container [2024-11-28 04:50:17,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:17" (1/1) ... [2024-11-28 04:50:17,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:50:18,331 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 04:50:18,391 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 04:50:18,396 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 04:50:18,402 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 04:50:18,411 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 04:50:18,460 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 04:50:18,461 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 04:50:18,464 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 04:50:18,465 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:18,469 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 04:50:18,471 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 04:50:18,472 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 04:50:18,473 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 04:50:18,480 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 04:50:18,483 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 04:50:18,484 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 04:50:18,485 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 04:50:18,486 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 04:50:18,492 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 04:50:18,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:18,518 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 04:50:18,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:50:18,575 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:18,611 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 04:50:18,617 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 04:50:18,624 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 04:50:18,634 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 04:50:18,682 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 04:50:18,682 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 04:50:18,688 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 04:50:18,688 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 04:50:18,692 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 04:50:18,693 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 04:50:18,694 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:18,699 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 04:50:18,704 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 04:50:18,707 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:50:18,709 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 04:50:18,712 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 04:50:18,712 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 04:50:18,720 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 04:50:18,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:18,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:50:18,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:18,985 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:50:18,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18 WrapperNode [2024-11-28 04:50:18,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:18,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:18,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:50:18,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:50:18,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,123 INFO L138 Inliner]: procedures = 180, calls = 342, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1165 [2024-11-28 04:50:19,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:19,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:50:19,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:50:19,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:50:19,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,274 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 268, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-28 04:50:19,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,359 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:50:19,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:50:19,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:50:19,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:50:19,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (1/1) ... [2024-11-28 04:50:19,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:19,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:50:19,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:50:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 04:50:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 04:50:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:50:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 04:50:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:50:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:50:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 04:50:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-28 04:50:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:50:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:50:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:50:19,769 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:50:19,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:50:19,796 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:50:19,841 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:50:19,871 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:50:25,528 INFO L? ?]: Removed 1321 outVars from TransFormulas that were not future-live. [2024-11-28 04:50:25,528 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:50:25,571 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:50:25,575 INFO L312 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-28 04:50:25,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:25 BoogieIcfgContainer [2024-11-28 04:50:25,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:50:25,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:50:25,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:50:25,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:50:25,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:17" (1/3) ... [2024-11-28 04:50:25,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123357a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:25, skipping insertion in model container [2024-11-28 04:50:25,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:18" (2/3) ... [2024-11-28 04:50:25,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123357a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:25, skipping insertion in model container [2024-11-28 04:50:25,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:25" (3/3) ... [2024-11-28 04:50:25,590 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2024-11-28 04:50:25,605 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:50:25,607 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test8-2.i that has 7 procedures, 1310 locations, 1 initial locations, 42 loop locations, and 634 error locations. [2024-11-28 04:50:25,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:50:25,699 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;@7c822e59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:50:25,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2024-11-28 04:50:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 1300 states, 642 states have (on average 2.2274143302180685) internal successors, (1430), 1290 states have internal predecessors, (1430), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:50:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:50:25,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:25,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:50:25,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:25,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:25,719 INFO L85 PathProgramCache]: Analyzing trace with hash 158947, now seen corresponding path program 1 times [2024-11-28 04:50:25,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:25,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013752465] [2024-11-28 04:50:25,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:25,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:25,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:25,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:25,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:50:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:25,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:50:25,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:25,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:50:26,015 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 04:50:26,015 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:26,016 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013752465] [2024-11-28 04:50:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013752465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:26,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:26,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:50:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253569973] [2024-11-28 04:50:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:26,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:26,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:26,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:26,060 INFO L87 Difference]: Start difference. First operand has 1300 states, 642 states have (on average 2.2274143302180685) internal successors, (1430), 1290 states have internal predecessors, (1430), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:28,740 INFO L93 Difference]: Finished difference Result 1482 states and 1589 transitions. [2024-11-28 04:50:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 04:50:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:28,765 INFO L225 Difference]: With dead ends: 1482 [2024-11-28 04:50:28,765 INFO L226 Difference]: Without dead ends: 1480 [2024-11-28 04:50:28,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:28,771 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 1154 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:28,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1061 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:50:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2024-11-28 04:50:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1289. [2024-11-28 04:50:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 647 states have (on average 2.081916537867079) internal successors, (1347), 1278 states have internal predecessors, (1347), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 04:50:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1391 transitions. [2024-11-28 04:50:28,893 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1391 transitions. Word has length 3 [2024-11-28 04:50:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:28,894 INFO L471 AbstractCegarLoop]: Abstraction has 1289 states and 1391 transitions. [2024-11-28 04:50:28,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1391 transitions. [2024-11-28 04:50:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:50:28,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:28,896 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:50:28,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:50:29,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:29,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash 158948, now seen corresponding path program 1 times [2024-11-28 04:50:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:29,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048014144] [2024-11-28 04:50:29,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:29,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:29,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:29,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:29,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:50:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:29,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:50:29,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:29,254 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 04:50:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:29,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:29,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048014144] [2024-11-28 04:50:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048014144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:29,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:50:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195367316] [2024-11-28 04:50:29,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:29,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:29,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:29,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:29,276 INFO L87 Difference]: Start difference. First operand 1289 states and 1391 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:33,616 INFO L93 Difference]: Finished difference Result 1891 states and 2036 transitions. [2024-11-28 04:50:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 04:50:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:33,623 INFO L225 Difference]: With dead ends: 1891 [2024-11-28 04:50:33,623 INFO L226 Difference]: Without dead ends: 1891 [2024-11-28 04:50:33,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:33,624 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 641 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:33,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1842 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:50:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-28 04:50:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1501. [2024-11-28 04:50:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 859 states have (on average 2.067520372526193) internal successors, (1776), 1489 states have internal predecessors, (1776), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:50:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1822 transitions. [2024-11-28 04:50:33,666 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1822 transitions. Word has length 3 [2024-11-28 04:50:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:33,666 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 1822 transitions. [2024-11-28 04:50:33,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1822 transitions. [2024-11-28 04:50:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:50:33,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:33,667 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:33,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:50:33,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:33,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:33,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2043492463, now seen corresponding path program 1 times [2024-11-28 04:50:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701411349] [2024-11-28 04:50:33,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:33,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:33,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:33,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:50:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:34,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:50:34,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:34,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:50:34,114 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 04:50:34,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-28 04:50:34,195 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 04:50:34,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:34,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701411349] [2024-11-28 04:50:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701411349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:34,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:34,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:50:34,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806354971] [2024-11-28 04:50:34,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:34,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:50:34,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:34,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:50:34,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:50:34,198 INFO L87 Difference]: Start difference. First operand 1501 states and 1822 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:42,248 INFO L93 Difference]: Finished difference Result 2787 states and 2992 transitions. [2024-11-28 04:50:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:50:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:50:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:42,262 INFO L225 Difference]: With dead ends: 2787 [2024-11-28 04:50:42,262 INFO L226 Difference]: Without dead ends: 2787 [2024-11-28 04:50:42,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:50:42,266 INFO L435 NwaCegarLoop]: 1306 mSDtfsCounter, 1583 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:42,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2813 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-28 04:50:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2024-11-28 04:50:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 1654. [2024-11-28 04:50:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1011 states have (on average 2.0474777448071215) internal successors, (2070), 1641 states have internal predecessors, (2070), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:50:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2118 transitions. [2024-11-28 04:50:42,370 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2118 transitions. Word has length 8 [2024-11-28 04:50:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:42,371 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2118 transitions. [2024-11-28 04:50:42,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2118 transitions. [2024-11-28 04:50:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:50:42,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:42,372 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:42,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:42,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:42,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:42,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1076243185, now seen corresponding path program 1 times [2024-11-28 04:50:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672985641] [2024-11-28 04:50:42,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:42,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:42,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:42,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:50:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:42,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:50:42,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:42,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:50:42,808 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 04:50:42,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:42,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672985641] [2024-11-28 04:50:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672985641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:42,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:42,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:50:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794268818] [2024-11-28 04:50:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:42,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:42,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:42,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:42,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:42,811 INFO L87 Difference]: Start difference. First operand 1654 states and 2118 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:46,995 INFO L93 Difference]: Finished difference Result 2360 states and 3071 transitions. [2024-11-28 04:50:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:50:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:47,003 INFO L225 Difference]: With dead ends: 2360 [2024-11-28 04:50:47,003 INFO L226 Difference]: Without dead ends: 2360 [2024-11-28 04:50:47,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:47,004 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 713 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:47,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2062 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:50:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2024-11-28 04:50:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2122. [2024-11-28 04:50:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1486 states have (on average 2.024899057873486) internal successors, (3009), 2106 states have internal predecessors, (3009), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:50:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3063 transitions. [2024-11-28 04:50:47,061 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3063 transitions. Word has length 9 [2024-11-28 04:50:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:47,062 INFO L471 AbstractCegarLoop]: Abstraction has 2122 states and 3063 transitions. [2024-11-28 04:50:47,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3063 transitions. [2024-11-28 04:50:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:50:47,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:47,062 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:47,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:47,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:47,263 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:47,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1076243184, now seen corresponding path program 1 times [2024-11-28 04:50:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:47,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185660800] [2024-11-28 04:50:47,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:47,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:47,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:50:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:47,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:50:47,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:47,454 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 04:50:47,473 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 04:50:47,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:47,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185660800] [2024-11-28 04:50:47,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185660800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:47,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:50:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569868174] [2024-11-28 04:50:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:47,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:47,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:47,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:47,475 INFO L87 Difference]: Start difference. First operand 2122 states and 3063 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:50,013 INFO L93 Difference]: Finished difference Result 2469 states and 3430 transitions. [2024-11-28 04:50:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:50,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:50:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:50,022 INFO L225 Difference]: With dead ends: 2469 [2024-11-28 04:50:50,022 INFO L226 Difference]: Without dead ends: 2469 [2024-11-28 04:50:50,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:50,023 INFO L435 NwaCegarLoop]: 1234 mSDtfsCounter, 950 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:50,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1647 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:50:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2024-11-28 04:50:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2074. [2024-11-28 04:50:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 1486 states have (on average 1.9804845222072678) internal successors, (2943), 2058 states have internal predecessors, (2943), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:50:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2997 transitions. [2024-11-28 04:50:50,080 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2997 transitions. Word has length 9 [2024-11-28 04:50:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:50,080 INFO L471 AbstractCegarLoop]: Abstraction has 2074 states and 2997 transitions. [2024-11-28 04:50:50,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2997 transitions. [2024-11-28 04:50:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:50:50,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:50,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:50,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:50,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:50,285 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:50,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1888589226, now seen corresponding path program 1 times [2024-11-28 04:50:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757433761] [2024-11-28 04:50:50,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:50,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:50,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:50:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:50,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:50:50,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:50,561 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 04:50:50,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:50,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757433761] [2024-11-28 04:50:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757433761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:50,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:50:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193302046] [2024-11-28 04:50:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:50,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:50,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:50,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:50,564 INFO L87 Difference]: Start difference. First operand 2074 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:51,108 INFO L93 Difference]: Finished difference Result 2648 states and 3664 transitions. [2024-11-28 04:50:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:51,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:50:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:51,117 INFO L225 Difference]: With dead ends: 2648 [2024-11-28 04:50:51,118 INFO L226 Difference]: Without dead ends: 2648 [2024-11-28 04:50:51,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:51,119 INFO L435 NwaCegarLoop]: 1455 mSDtfsCounter, 638 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:51,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2653 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:50:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-28 04:50:51,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2275. [2024-11-28 04:50:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1686 states have (on average 1.9875444839857652) internal successors, (3351), 2258 states have internal predecessors, (3351), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:50:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3407 transitions. [2024-11-28 04:50:51,184 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3407 transitions. Word has length 11 [2024-11-28 04:50:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:51,184 INFO L471 AbstractCegarLoop]: Abstraction has 2275 states and 3407 transitions. [2024-11-28 04:50:51,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3407 transitions. [2024-11-28 04:50:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:50:51,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:51,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:51,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:50:51,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:51,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr335REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:51,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966110, now seen corresponding path program 1 times [2024-11-28 04:50:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901510793] [2024-11-28 04:50:51,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:51,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:51,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:51,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:50:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:51,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:50:51,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:51,570 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 04:50:51,705 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 04:50:51,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:51,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:51,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901510793] [2024-11-28 04:50:51,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901510793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:51,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:51,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:50:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497534491] [2024-11-28 04:50:51,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:51,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:50:51,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:51,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:50:51,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:50:51,708 INFO L87 Difference]: Start difference. First operand 2275 states and 3407 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:56,759 INFO L93 Difference]: Finished difference Result 2614 states and 3532 transitions. [2024-11-28 04:50:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:50:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 04:50:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:56,768 INFO L225 Difference]: With dead ends: 2614 [2024-11-28 04:50:56,768 INFO L226 Difference]: Without dead ends: 2614 [2024-11-28 04:50:56,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:50:56,770 INFO L435 NwaCegarLoop]: 1042 mSDtfsCounter, 636 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:56,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 2433 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-28 04:50:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-28 04:50:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2224. [2024-11-28 04:50:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1635 states have (on average 1.9743119266055047) internal successors, (3228), 2207 states have internal predecessors, (3228), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:50:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3284 transitions. [2024-11-28 04:50:56,817 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3284 transitions. Word has length 13 [2024-11-28 04:50:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:56,817 INFO L471 AbstractCegarLoop]: Abstraction has 2224 states and 3284 transitions. [2024-11-28 04:50:56,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3284 transitions. [2024-11-28 04:50:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:50:56,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:56,818 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:56,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:50:57,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:57,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:50:57,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966109, now seen corresponding path program 1 times [2024-11-28 04:50:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:50:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990771285] [2024-11-28 04:50:57,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:57,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:57,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:50:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:57,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:50:57,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:57,209 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 04:50:57,258 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 04:50:57,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:57,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:50:57,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990771285] [2024-11-28 04:50:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990771285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:57,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:50:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699157688] [2024-11-28 04:50:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:57,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:50:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:50:57,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:50:57,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:50:57,259 INFO L87 Difference]: Start difference. First operand 2224 states and 3284 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:00,376 INFO L93 Difference]: Finished difference Result 2425 states and 3408 transitions. [2024-11-28 04:51:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 04:51:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:00,383 INFO L225 Difference]: With dead ends: 2425 [2024-11-28 04:51:00,383 INFO L226 Difference]: Without dead ends: 2425 [2024-11-28 04:51:00,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:00,383 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 1151 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:00,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1678 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 04:51:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-11-28 04:51:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2201. [2024-11-28 04:51:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1635 states have (on average 1.9058103975535168) internal successors, (3116), 2184 states have internal predecessors, (3116), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:51:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3172 transitions. [2024-11-28 04:51:00,460 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3172 transitions. Word has length 13 [2024-11-28 04:51:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:00,460 INFO L471 AbstractCegarLoop]: Abstraction has 2201 states and 3172 transitions. [2024-11-28 04:51:00,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3172 transitions. [2024-11-28 04:51:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:51:00,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:00,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:00,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:00,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:00,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:00,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1117471069, now seen corresponding path program 1 times [2024-11-28 04:51:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566860515] [2024-11-28 04:51:00,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:00,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:00,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:51:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:00,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:51:00,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:00,833 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:51:00,834 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:51:00,834 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:51:00,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-28 04:51:00,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:51:00,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-28 04:51:00,916 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 04:51:00,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:00,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566860515] [2024-11-28 04:51:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566860515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076797077] [2024-11-28 04:51:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:00,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:00,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:00,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:00,918 INFO L87 Difference]: Start difference. First operand 2201 states and 3172 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:01,633 INFO L93 Difference]: Finished difference Result 3270 states and 4380 transitions. [2024-11-28 04:51:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 04:51:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:01,645 INFO L225 Difference]: With dead ends: 3270 [2024-11-28 04:51:01,646 INFO L226 Difference]: Without dead ends: 3270 [2024-11-28 04:51:01,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:01,647 INFO L435 NwaCegarLoop]: 1246 mSDtfsCounter, 1142 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:01,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3723 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2024-11-28 04:51:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 1881. [2024-11-28 04:51:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1317 states have (on average 1.9073652239939256) internal successors, (2512), 1866 states have internal predecessors, (2512), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:51:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2564 transitions. [2024-11-28 04:51:01,706 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2564 transitions. Word has length 14 [2024-11-28 04:51:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:01,706 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 2564 transitions. [2024-11-28 04:51:01,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2564 transitions. [2024-11-28 04:51:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:51:01,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:01,708 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:01,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:51:01,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:01,908 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:01,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1644780993, now seen corresponding path program 1 times [2024-11-28 04:51:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:01,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986687951] [2024-11-28 04:51:01,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:01,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:01,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:01,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:01,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:51:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:02,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:51:02,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:02,159 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 04:51:02,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:02,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986687951] [2024-11-28 04:51:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986687951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:02,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:02,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645971841] [2024-11-28 04:51:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:02,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:02,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:02,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:02,161 INFO L87 Difference]: Start difference. First operand 1881 states and 2564 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:05,095 INFO L93 Difference]: Finished difference Result 1879 states and 2542 transitions. [2024-11-28 04:51:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 04:51:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:05,102 INFO L225 Difference]: With dead ends: 1879 [2024-11-28 04:51:05,102 INFO L226 Difference]: Without dead ends: 1879 [2024-11-28 04:51:05,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:05,103 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 976 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:05,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1623 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 04:51:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2024-11-28 04:51:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1858. [2024-11-28 04:51:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1317 states have (on average 1.8724373576309794) internal successors, (2466), 1843 states have internal predecessors, (2466), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:51:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2518 transitions. [2024-11-28 04:51:05,132 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2518 transitions. Word has length 19 [2024-11-28 04:51:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:05,132 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2518 transitions. [2024-11-28 04:51:05,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2518 transitions. [2024-11-28 04:51:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:51:05,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:05,133 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:05,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:05,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:05,334 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:05,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1644780992, now seen corresponding path program 1 times [2024-11-28 04:51:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388968872] [2024-11-28 04:51:05,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:05,337 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:05,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:51:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:05,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:51:05,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:05,549 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 04:51:05,687 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 04:51:05,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:05,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:05,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388968872] [2024-11-28 04:51:05,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388968872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:05,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776667444] [2024-11-28 04:51:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:05,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:05,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:05,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:05,688 INFO L87 Difference]: Start difference. First operand 1858 states and 2518 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:11,155 INFO L93 Difference]: Finished difference Result 2205 states and 2682 transitions. [2024-11-28 04:51:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:11,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 04:51:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:11,163 INFO L225 Difference]: With dead ends: 2205 [2024-11-28 04:51:11,164 INFO L226 Difference]: Without dead ends: 2205 [2024-11-28 04:51:11,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:11,165 INFO L435 NwaCegarLoop]: 1458 mSDtfsCounter, 811 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:11,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2969 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 04:51:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2024-11-28 04:51:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1974. [2024-11-28 04:51:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1433 states have (on average 1.8185624563852059) internal successors, (2606), 1959 states have internal predecessors, (2606), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:51:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2658 transitions. [2024-11-28 04:51:11,223 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2658 transitions. Word has length 19 [2024-11-28 04:51:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:11,223 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2658 transitions. [2024-11-28 04:51:11,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2658 transitions. [2024-11-28 04:51:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:51:11,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:11,227 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:11,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:51:11,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:11,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:11,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1472731388, now seen corresponding path program 1 times [2024-11-28 04:51:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894558330] [2024-11-28 04:51:11,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:11,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:11,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:11,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:51:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:11,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:51:11,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:11,689 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 04:51:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:12,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:12,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894558330] [2024-11-28 04:51:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894558330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:12,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:51:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978559624] [2024-11-28 04:51:12,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:12,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:51:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:12,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:51:12,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:51:12,784 INFO L87 Difference]: Start difference. First operand 1974 states and 2658 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:28,112 INFO L93 Difference]: Finished difference Result 2567 states and 3178 transitions. [2024-11-28 04:51:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:51:28,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 04:51:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:28,119 INFO L225 Difference]: With dead ends: 2567 [2024-11-28 04:51:28,119 INFO L226 Difference]: Without dead ends: 2567 [2024-11-28 04:51:28,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:51:28,121 INFO L435 NwaCegarLoop]: 1486 mSDtfsCounter, 1469 mSDsluCounter, 3990 mSDsCounter, 0 mSdLazyCounter, 3993 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:28,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 5476 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3993 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2024-11-28 04:51:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2024-11-28 04:51:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2140. [2024-11-28 04:51:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1599 states have (on average 1.7761100687929956) internal successors, (2840), 2125 states have internal predecessors, (2840), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:51:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2892 transitions. [2024-11-28 04:51:28,161 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2892 transitions. Word has length 38 [2024-11-28 04:51:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:28,161 INFO L471 AbstractCegarLoop]: Abstraction has 2140 states and 2892 transitions. [2024-11-28 04:51:28,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2892 transitions. [2024-11-28 04:51:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:51:28,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:28,163 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:28,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:28,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:28,364 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:28,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1846854937, now seen corresponding path program 1 times [2024-11-28 04:51:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853641590] [2024-11-28 04:51:28,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:28,367 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:28,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:51:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:28,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:51:28,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:28,715 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 04:51:28,715 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:28,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853641590] [2024-11-28 04:51:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853641590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251590630] [2024-11-28 04:51:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:28,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:28,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:28,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:28,718 INFO L87 Difference]: Start difference. First operand 2140 states and 2892 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:28,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:28,852 INFO L93 Difference]: Finished difference Result 1825 states and 2452 transitions. [2024-11-28 04:51:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:51:28,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 04:51:28,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:28,861 INFO L225 Difference]: With dead ends: 1825 [2024-11-28 04:51:28,861 INFO L226 Difference]: Without dead ends: 1825 [2024-11-28 04:51:28,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:28,862 INFO L435 NwaCegarLoop]: 1206 mSDtfsCounter, 56 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:28,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3545 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-11-28 04:51:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1823. [2024-11-28 04:51:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1305 states have (on average 1.8375478927203066) internal successors, (2398), 1808 states have internal predecessors, (2398), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:51:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2450 transitions. [2024-11-28 04:51:28,891 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2450 transitions. Word has length 54 [2024-11-28 04:51:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:28,892 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2450 transitions. [2024-11-28 04:51:28,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2450 transitions. [2024-11-28 04:51:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:51:28,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:28,893 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:28,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:29,094 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:29,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1836661275, now seen corresponding path program 1 times [2024-11-28 04:51:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78057610] [2024-11-28 04:51:29,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:29,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:29,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:29,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:51:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:29,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:51:29,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:29,436 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 04:51:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:51:30,246 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 04:51:30,268 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:51:30,268 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 04:51:30,276 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 04:51:30,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:30,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78057610] [2024-11-28 04:51:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78057610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656023913] [2024-11-28 04:51:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:30,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:30,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:30,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:30,278 INFO L87 Difference]: Start difference. First operand 1823 states and 2450 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:33,143 INFO L93 Difference]: Finished difference Result 1796 states and 2424 transitions. [2024-11-28 04:51:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:33,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-28 04:51:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:33,149 INFO L225 Difference]: With dead ends: 1796 [2024-11-28 04:51:33,149 INFO L226 Difference]: Without dead ends: 1796 [2024-11-28 04:51:33,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:33,150 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 1628 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:33,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 800 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:51:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2024-11-28 04:51:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1358. [2024-11-28 04:51:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 883 states have (on average 1.7599093997734994) internal successors, (1554), 1346 states have internal predecessors, (1554), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:51:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1600 transitions. [2024-11-28 04:51:33,173 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1600 transitions. Word has length 62 [2024-11-28 04:51:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:33,174 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1600 transitions. [2024-11-28 04:51:33,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1600 transitions. [2024-11-28 04:51:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:51:33,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:33,175 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:33,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:51:33,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:33,376 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:33,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1380689791, now seen corresponding path program 1 times [2024-11-28 04:51:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83849839] [2024-11-28 04:51:33,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:33,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:33,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:33,379 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:33,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:51:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:33,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:51:33,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:33,657 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 04:51:33,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:51:33,706 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 04:51:33,720 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 04:51:33,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:33,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:33,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83849839] [2024-11-28 04:51:33,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83849839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:33,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:33,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168038502] [2024-11-28 04:51:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:33,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:51:33,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:33,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:51:33,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:33,721 INFO L87 Difference]: Start difference. First operand 1358 states and 1600 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:36,921 INFO L93 Difference]: Finished difference Result 1357 states and 1599 transitions. [2024-11-28 04:51:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:51:36,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:51:36,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:36,925 INFO L225 Difference]: With dead ends: 1357 [2024-11-28 04:51:36,925 INFO L226 Difference]: Without dead ends: 1357 [2024-11-28 04:51:36,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:51:36,926 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 2 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:36,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3168 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:51:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-11-28 04:51:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1357. [2024-11-28 04:51:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 883 states have (on average 1.7587768969422424) internal successors, (1553), 1345 states have internal predecessors, (1553), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:51:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1599 transitions. [2024-11-28 04:51:36,947 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1599 transitions. Word has length 67 [2024-11-28 04:51:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:36,948 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1599 transitions. [2024-11-28 04:51:36,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1599 transitions. [2024-11-28 04:51:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:51:36,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:36,949 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:36,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:37,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:37,150 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:37,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1380689792, now seen corresponding path program 1 times [2024-11-28 04:51:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831902788] [2024-11-28 04:51:37,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:37,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:37,152 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:37,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:51:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:37,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:51:37,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:37,483 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 04:51:37,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:51:37,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:51:37,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 04:51:37,589 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 04:51:37,589 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:37,589 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831902788] [2024-11-28 04:51:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831902788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114509688] [2024-11-28 04:51:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:37,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:51:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:37,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:51:37,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:51:37,593 INFO L87 Difference]: Start difference. First operand 1357 states and 1599 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:42,153 INFO L93 Difference]: Finished difference Result 1356 states and 1598 transitions. [2024-11-28 04:51:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:51:42,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:51:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:42,157 INFO L225 Difference]: With dead ends: 1356 [2024-11-28 04:51:42,157 INFO L226 Difference]: Without dead ends: 1356 [2024-11-28 04:51:42,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:51:42,159 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 1 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:42,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3122 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 04:51:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-11-28 04:51:42,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1356. [2024-11-28 04:51:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 882 states have (on average 1.7596371882086168) internal successors, (1552), 1344 states have internal predecessors, (1552), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:51:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1598 transitions. [2024-11-28 04:51:42,177 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1598 transitions. Word has length 67 [2024-11-28 04:51:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:42,178 INFO L471 AbstractCegarLoop]: Abstraction has 1356 states and 1598 transitions. [2024-11-28 04:51:42,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1598 transitions. [2024-11-28 04:51:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:51:42,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:42,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:42,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:51:42,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:42,380 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:42,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1781629702, now seen corresponding path program 1 times [2024-11-28 04:51:42,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:42,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640376918] [2024-11-28 04:51:42,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:42,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:42,382 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:42,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:51:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:42,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:51:42,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:42,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:51:42,805 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 04:51:42,825 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 04:51:42,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:42,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640376918] [2024-11-28 04:51:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640376918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:51:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840456456] [2024-11-28 04:51:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:42,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:51:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:42,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:51:42,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:51:42,829 INFO L87 Difference]: Start difference. First operand 1356 states and 1598 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:47,545 INFO L93 Difference]: Finished difference Result 1368 states and 1613 transitions. [2024-11-28 04:51:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:51:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-28 04:51:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:47,549 INFO L225 Difference]: With dead ends: 1368 [2024-11-28 04:51:47,549 INFO L226 Difference]: Without dead ends: 1368 [2024-11-28 04:51:47,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:51:47,549 INFO L435 NwaCegarLoop]: 1099 mSDtfsCounter, 61 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:47,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 4067 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 04:51:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-28 04:51:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1362. [2024-11-28 04:51:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 887 states have (on average 1.7576099210823) internal successors, (1559), 1349 states have internal predecessors, (1559), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (25), 9 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-28 04:51:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1608 transitions. [2024-11-28 04:51:47,565 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1608 transitions. Word has length 75 [2024-11-28 04:51:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:47,565 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 1608 transitions. [2024-11-28 04:51:47,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1608 transitions. [2024-11-28 04:51:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:51:47,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:47,566 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:47,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:51:47,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:47,767 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:47,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1781629703, now seen corresponding path program 1 times [2024-11-28 04:51:47,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:47,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896314751] [2024-11-28 04:51:47,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:47,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:47,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:47,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:51:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:48,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:51:48,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:48,153 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 04:51:48,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:48,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:48,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896314751] [2024-11-28 04:51:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896314751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:48,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:48,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472488122] [2024-11-28 04:51:48,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:48,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:48,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:48,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:48,158 INFO L87 Difference]: Start difference. First operand 1362 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:48,223 INFO L93 Difference]: Finished difference Result 1359 states and 1602 transitions. [2024-11-28 04:51:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-28 04:51:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:48,231 INFO L225 Difference]: With dead ends: 1359 [2024-11-28 04:51:48,231 INFO L226 Difference]: Without dead ends: 1359 [2024-11-28 04:51:48,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:48,232 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 0 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3526 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:48,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3526 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:51:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2024-11-28 04:51:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1359. [2024-11-28 04:51:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 884 states have (on average 1.759049773755656) internal successors, (1555), 1347 states have internal predecessors, (1555), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:51:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1602 transitions. [2024-11-28 04:51:48,263 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1602 transitions. Word has length 75 [2024-11-28 04:51:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:48,264 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1602 transitions. [2024-11-28 04:51:48,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:51:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1602 transitions. [2024-11-28 04:51:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:51:48,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:48,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:48,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:51:48,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:48,466 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:48,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash -19258566, now seen corresponding path program 1 times [2024-11-28 04:51:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:48,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275433965] [2024-11-28 04:51:48,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:48,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:48,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:51:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:48,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:51:48,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:48,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:48,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:48,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275433965] [2024-11-28 04:51:48,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275433965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:48,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:48,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 04:51:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152627553] [2024-11-28 04:51:48,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:48,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:51:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:48,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:51:48,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:51:48,917 INFO L87 Difference]: Start difference. First operand 1359 states and 1602 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:51:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:49,157 INFO L93 Difference]: Finished difference Result 1371 states and 1619 transitions. [2024-11-28 04:51:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:51:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2024-11-28 04:51:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:49,162 INFO L225 Difference]: With dead ends: 1371 [2024-11-28 04:51:49,162 INFO L226 Difference]: Without dead ends: 1371 [2024-11-28 04:51:49,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:51:49,163 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 7 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7043 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:49,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7043 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:51:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-28 04:51:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2024-11-28 04:51:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 893 states have (on average 1.7581187010078387) internal successors, (1570), 1356 states have internal predecessors, (1570), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:51:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1617 transitions. [2024-11-28 04:51:49,186 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1617 transitions. Word has length 76 [2024-11-28 04:51:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:49,187 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1617 transitions. [2024-11-28 04:51:49,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:51:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1617 transitions. [2024-11-28 04:51:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:51:49,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:49,188 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:49,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:51:49,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:49,389 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:51:49,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1619922938, now seen corresponding path program 2 times [2024-11-28 04:51:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:49,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102513792] [2024-11-28 04:51:49,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:49,392 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:49,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:52:26,897 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:26,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:26,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:52:26,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:27,122 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:52:27,122 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 04:52:27,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:52:27,339 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:52:27,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:52:27,385 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 33 treesize of output 15 [2024-11-28 04:52:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:52:27,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:27,520 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:52:27,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 04:52:27,581 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:52:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102513792] [2024-11-28 04:52:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102513792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1715434456] [2024-11-28 04:52:27,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:27,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:52:27,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:52:27,589 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:52:27,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-28 04:52:29,297 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:29,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:29,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:52:29,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:29,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1715434456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:29,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 04:52:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645420980] [2024-11-28 04:52:29,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:29,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:52:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:52:29,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:52:29,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-28 04:52:29,849 INFO L87 Difference]: Start difference. First operand 1369 states and 1617 transitions. Second operand has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:52:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:44,428 INFO L93 Difference]: Finished difference Result 1393 states and 1648 transitions. [2024-11-28 04:52:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:52:44,429 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2024-11-28 04:52:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:44,433 INFO L225 Difference]: With dead ends: 1393 [2024-11-28 04:52:44,433 INFO L226 Difference]: Without dead ends: 1389 [2024-11-28 04:52:44,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=410, Invalid=2132, Unknown=8, NotChecked=0, Total=2550 [2024-11-28 04:52:44,434 INFO L435 NwaCegarLoop]: 719 mSDtfsCounter, 876 mSDsluCounter, 8124 mSDsCounter, 0 mSdLazyCounter, 7152 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 8843 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 7152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:44,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 8843 Invalid, 7181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 7152 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2024-11-28 04:52:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-28 04:52:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1377. [2024-11-28 04:52:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 902 states have (on average 1.752771618625277) internal successors, (1581), 1364 states have internal predecessors, (1581), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:52:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1628 transitions. [2024-11-28 04:52:44,456 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1628 transitions. Word has length 79 [2024-11-28 04:52:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:44,456 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 1628 transitions. [2024-11-28 04:52:44,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:52:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1628 transitions. [2024-11-28 04:52:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:52:44,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:44,458 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:44,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-28 04:52:44,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:52:44,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:44,859 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:52:44,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:44,859 INFO L85 PathProgramCache]: Analyzing trace with hash 848913287, now seen corresponding path program 1 times [2024-11-28 04:52:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:52:44,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486289289] [2024-11-28 04:52:44,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:44,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:44,863 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:44,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:52:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:45,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:52:45,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:45,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:46,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:52:46,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486289289] [2024-11-28 04:52:46,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486289289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:46,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:52:46,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 04:52:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064222775] [2024-11-28 04:52:46,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:46,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:52:46,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:52:46,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:52:46,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:52:46,174 INFO L87 Difference]: Start difference. First operand 1377 states and 1628 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:52:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:48,537 INFO L93 Difference]: Finished difference Result 1401 states and 1667 transitions. [2024-11-28 04:52:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:52:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2024-11-28 04:52:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:48,540 INFO L225 Difference]: With dead ends: 1401 [2024-11-28 04:52:48,541 INFO L226 Difference]: Without dead ends: 1395 [2024-11-28 04:52:48,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:52:48,542 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 19 mSDsluCounter, 14087 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15264 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:48,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15264 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:52:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-28 04:52:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1395. [2024-11-28 04:52:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 920 states have (on average 1.7434782608695651) internal successors, (1604), 1382 states have internal predecessors, (1604), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:52:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1651 transitions. [2024-11-28 04:52:48,564 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1651 transitions. Word has length 85 [2024-11-28 04:52:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:48,565 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 1651 transitions. [2024-11-28 04:52:48,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:52:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1651 transitions. [2024-11-28 04:52:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:52:48,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:48,566 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:48,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:52:48,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:48,767 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:52:48,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1705874809, now seen corresponding path program 2 times [2024-11-28 04:52:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:52:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227724631] [2024-11-28 04:52:48,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:48,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:48,773 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:48,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:53:06,596 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:53:06,596 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:06,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:53:06,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:06,753 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 04:53:06,768 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:53:06,768 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 04:53:06,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:53:06,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:53:06,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:53:06,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:53:07,606 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:53:07,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:53:07,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:53:07,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:53:07,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:53:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 04:53:07,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:08,368 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1860 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1859 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1860 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1859) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:53:08,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:53:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227724631] [2024-11-28 04:53:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227724631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [779119562] [2024-11-28 04:53:08,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:08,374 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:53:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:53:08,376 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:53:08,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-28 04:53:10,351 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:53:10,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:10,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:53:10,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:11,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [779119562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:14,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26, 26] total 57 [2024-11-28 04:53:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666597285] [2024-11-28 04:53:14,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:14,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 04:53:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:53:14,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 04:53:14,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2728, Unknown=1, NotChecked=114, Total=3540 [2024-11-28 04:53:14,242 INFO L87 Difference]: Start difference. First operand 1395 states and 1651 transitions. Second operand has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:54:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:01,932 INFO L93 Difference]: Finished difference Result 1446 states and 1732 transitions. [2024-11-28 04:54:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 04:54:01,936 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2024-11-28 04:54:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:01,939 INFO L225 Difference]: With dead ends: 1446 [2024-11-28 04:54:01,939 INFO L226 Difference]: Without dead ends: 1438 [2024-11-28 04:54:01,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3014 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=3100, Invalid=14459, Unknown=1, NotChecked=262, Total=17822 [2024-11-28 04:54:01,945 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 853 mSDsluCounter, 22655 mSDsCounter, 0 mSdLazyCounter, 17205 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 23444 SdHoareTripleChecker+Invalid, 17281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 17205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:01,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 23444 Invalid, 17281 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [76 Valid, 17205 Invalid, 0 Unknown, 0 Unchecked, 38.0s Time] [2024-11-28 04:54:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-28 04:54:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1428. [2024-11-28 04:54:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 954 states have (on average 1.7243186582809225) internal successors, (1645), 1415 states have internal predecessors, (1645), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:54:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1692 transitions. [2024-11-28 04:54:01,965 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1692 transitions. Word has length 97 [2024-11-28 04:54:01,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:01,966 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 1692 transitions. [2024-11-28 04:54:01,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:54:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1692 transitions. [2024-11-28 04:54:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:54:01,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:01,967 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:01,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:02,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:54:02,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:02,368 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:54:02,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -680842910, now seen corresponding path program 1 times [2024-11-28 04:54:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190091337] [2024-11-28 04:54:02,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:02,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:02,371 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:02,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:54:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:02,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:54:02,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:03,126 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:54:03,127 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 04:54:03,152 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 19 treesize of output 1 [2024-11-28 04:54:03,862 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:03,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:54:04,002 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:04,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:54:04,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:54:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:54:04,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:04,120 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2519) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:54:04,132 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2519) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:54:04,641 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 04:54:04,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-28 04:54:04,652 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2565))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2519)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-28 04:54:04,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190091337] [2024-11-28 04:54:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190091337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [376530855] [2024-11-28 04:54:04,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:04,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:54:04,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:54:04,656 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:54:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-28 04:54:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:07,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 04:54:07,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:07,058 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 04:54:07,217 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:54:07,217 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 04:54:07,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:54:07,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 04:54:08,815 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:08,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:54:09,039 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:09,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:54:09,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:54:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:54:09,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:09,179 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2989) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:54:09,192 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2989) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:54:09,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3035 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3035))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2989)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:54:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [376530855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:09,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:09,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-28 04:54:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284634542] [2024-11-28 04:54:09,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:09,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:54:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:54:09,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:54:09,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=320, Unknown=6, NotChecked=246, Total=650 [2024-11-28 04:54:09,700 INFO L87 Difference]: Start difference. First operand 1428 states and 1692 transitions. Second operand has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:54:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:23,932 INFO L93 Difference]: Finished difference Result 1437 states and 1701 transitions. [2024-11-28 04:54:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:54:23,933 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-28 04:54:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:23,935 INFO L225 Difference]: With dead ends: 1437 [2024-11-28 04:54:23,936 INFO L226 Difference]: Without dead ends: 1437 [2024-11-28 04:54:23,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=425, Unknown=6, NotChecked=282, Total=812 [2024-11-28 04:54:23,937 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 853 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 6875 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 6887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:23,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 7627 Invalid, 6887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 6875 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2024-11-28 04:54:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-28 04:54:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1427. [2024-11-28 04:54:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 954 states have (on average 1.7232704402515724) internal successors, (1644), 1414 states have internal predecessors, (1644), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:54:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1691 transitions. [2024-11-28 04:54:23,961 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1691 transitions. Word has length 122 [2024-11-28 04:54:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:23,961 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1691 transitions. [2024-11-28 04:54:23,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:54:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1691 transitions. [2024-11-28 04:54:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:54:23,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:23,963 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:23,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:54:24,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-28 04:54:24,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:54:24,364 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:54:24,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -680842909, now seen corresponding path program 1 times [2024-11-28 04:54:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:54:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397094140] [2024-11-28 04:54:24,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:24,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:24,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:24,367 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:24,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:54:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:24,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 04:54:25,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:25,014 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 04:54:25,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:54:25,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:54:25,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:54:25,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:54:25,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:54:25,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:54:25,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:54:26,398 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:26,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:54:26,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:54:26,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:54:26,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:54:26,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:54:26,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:54:26,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:54:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:54:26,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:26,886 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:54:26,926 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:54:28,344 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3597 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3598) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3597) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3597 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3597))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3598) .cse2 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:54:28,351 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:54:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397094140] [2024-11-28 04:54:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397094140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1175759228] [2024-11-28 04:54:28,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:54:28,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:54:28,353 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:54:28,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-28 04:55:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:43,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 04:55:43,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:43,248 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 04:55:43,418 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 04:55:43,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:55:43,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:55:43,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:55:43,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:55:43,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:55:43,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:55:44,305 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:55:44,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:55:44,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:55:44,411 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:55:44,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:55:44,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:55:44,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:55:44,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:55:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:55:44,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:44,525 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-28 04:55:46,109 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4160) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4161) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4161))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4160) .cse2 v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:55:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1175759228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:46,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:55:46,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-28 04:55:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013762401] [2024-11-28 04:55:46,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:46,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:55:46,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:55:46,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:55:46,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=124, Unknown=9, NotChecked=130, Total=306 [2024-11-28 04:55:46,118 INFO L87 Difference]: Start difference. First operand 1427 states and 1691 transitions. Second operand has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 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 04:55:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:54,482 INFO L93 Difference]: Finished difference Result 1434 states and 1698 transitions. [2024-11-28 04:55:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:55:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-28 04:55:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:54,486 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 04:55:54,486 INFO L226 Difference]: Without dead ends: 1434 [2024-11-28 04:55:54,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=239, Unknown=9, NotChecked=180, Total=506 [2024-11-28 04:55:54,488 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 801 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:54,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2888 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-28 04:55:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-28 04:55:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1426. [2024-11-28 04:55:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 954 states have (on average 1.7222222222222223) internal successors, (1643), 1413 states have internal predecessors, (1643), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:55:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1690 transitions. [2024-11-28 04:55:54,508 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1690 transitions. Word has length 122 [2024-11-28 04:55:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:54,508 INFO L471 AbstractCegarLoop]: Abstraction has 1426 states and 1690 transitions. [2024-11-28 04:55:54,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 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 04:55:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1690 transitions. [2024-11-28 04:55:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:55:54,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:54,510 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:54,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:55:54,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-28 04:55:54,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:55:54,911 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:55:54,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2139832238, now seen corresponding path program 1 times [2024-11-28 04:55:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:55:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015189324] [2024-11-28 04:55:54,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:54,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:54,914 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:54,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:55:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:55,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 04:55:55,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:55,745 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 5 [2024-11-28 04:55:55,760 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:55:55,760 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 04:55:55,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:55:55,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:55:55,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:55:55,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:55:56,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:55:56,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:55:56,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:55:56,822 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:55:56,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:55:56,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:55:56,926 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:55:56,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:55:56,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:55:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:55:56,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:55:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:55:56,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:57,113 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 04:55:57,137 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:55:57,185 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4645))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4646) .cse0 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4646) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 04:55:57,242 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4646) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4645))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4646) .cse3 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 04:56:01,256 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4740 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4740))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4739) .cse1 v_ArrVal_4646) (select (select (store .cse2 .cse1 v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_4647))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4740 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4740))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_4645))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4739) .cse4 v_ArrVal_4646) .cse5 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:56:01,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015189324] [2024-11-28 04:56:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015189324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2041012561] [2024-11-28 04:56:01,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:01,271 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:56:01,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:56:01,273 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:56:01,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-28 04:56:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:11,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 04:56:11,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:11,983 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 04:56:12,786 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:56:12,787 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 04:56:12,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:56:12,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:56:12,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:56:13,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:56:13,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:56:15,792 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:15,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:56:15,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:56:16,067 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:16,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:56:16,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:56:16,320 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:16,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:56:16,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:56:16,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:56:16,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:56:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:56:16,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:16,645 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32))))))) is different from false [2024-11-28 04:56:16,717 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-28 04:56:16,820 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5226))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5225) .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5225) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 04:56:16,895 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5226))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5225) .cse1 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5225) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-28 04:56:20,014 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5320 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5320))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5226))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5319) .cse0 v_ArrVal_5225) .cse1 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5320 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5320))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5319) .cse6 v_ArrVal_5225) (select (select (store .cse7 .cse6 v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5227))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-28 04:56:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2041012561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:20,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:56:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-28 04:56:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176914945] [2024-11-28 04:56:20,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:20,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:56:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:20,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:56:20,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-28 04:56:20,032 INFO L87 Difference]: Start difference. First operand 1426 states and 1690 transitions. Second operand has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:56:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:47,038 INFO L93 Difference]: Finished difference Result 1433 states and 1697 transitions. [2024-11-28 04:56:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:56:47,039 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-28 04:56:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:47,041 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 04:56:47,041 INFO L226 Difference]: Without dead ends: 1433 [2024-11-28 04:56:47,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-28 04:56:47,042 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 801 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:47,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2892 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3385 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2024-11-28 04:56:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-28 04:56:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1425. [2024-11-28 04:56:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 954 states have (on average 1.721174004192872) internal successors, (1642), 1412 states have internal predecessors, (1642), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:56:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1689 transitions. [2024-11-28 04:56:47,059 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1689 transitions. Word has length 125 [2024-11-28 04:56:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:47,059 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1689 transitions. [2024-11-28 04:56:47,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:56:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1689 transitions. [2024-11-28 04:56:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:56:47,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:47,061 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:47,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-28 04:56:47,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:56:47,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:47,462 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:56:47,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2139832237, now seen corresponding path program 1 times [2024-11-28 04:56:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287861316] [2024-11-28 04:56:47,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:47,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:47,465 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:47,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:56:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:48,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 04:56:48,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:48,188 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 04:56:48,986 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:56:48,986 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 04:56:49,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:56:51,314 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:51,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:56:51,779 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:51,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:56:52,121 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:56:52,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:56:52,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:56:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:56:52,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:52,497 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5759) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:56:52,528 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5759) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:56:52,575 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5758))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 04:56:52,608 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5758))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:56:53,744 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-28 04:56:53,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-28 04:56:53,787 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5805))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5758)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-28 04:56:53,798 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287861316] [2024-11-28 04:56:53,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287861316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363172311] [2024-11-28 04:56:53,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:53,798 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:56:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:56:53,800 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:56:53,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-28 04:57:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:04,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:57:04,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:04,763 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 04:57:05,570 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:57:05,570 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 04:57:05,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:57:06,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 04:57:09,822 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:57:09,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:57:10,417 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:57:10,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:57:10,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:57:10,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:57:10,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:57:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:57:11,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:11,578 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:57:11,623 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6244))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 04:57:11,655 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6244))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:57:12,649 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6291 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6291))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6244)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:57:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363172311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:12,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:57:12,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-28 04:57:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283490049] [2024-11-28 04:57:12,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:12,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:57:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:12,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:57:12,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=423, Unknown=18, NotChecked=450, Total=992 [2024-11-28 04:57:12,659 INFO L87 Difference]: Start difference. First operand 1425 states and 1689 transitions. Second operand has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:58:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:03,306 INFO L93 Difference]: Finished difference Result 1434 states and 1698 transitions. [2024-11-28 04:58:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:58:03,307 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-28 04:58:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:03,310 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 04:58:03,311 INFO L226 Difference]: Without dead ends: 1434 [2024-11-28 04:58:03,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=122, Invalid=546, Unknown=18, NotChecked=504, Total=1190 [2024-11-28 04:58:03,312 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 843 mSDsluCounter, 6886 mSDsCounter, 0 mSdLazyCounter, 6854 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 6867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:03,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 7603 Invalid, 6867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 6854 Invalid, 0 Unknown, 0 Unchecked, 50.0s Time] [2024-11-28 04:58:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-28 04:58:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1424. [2024-11-28 04:58:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 954 states have (on average 1.720125786163522) internal successors, (1641), 1411 states have internal predecessors, (1641), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:58:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2024-11-28 04:58:03,330 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 125 [2024-11-28 04:58:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:03,331 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2024-11-28 04:58:03,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:58:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2024-11-28 04:58:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:58:03,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:03,333 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:03,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:03,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:58:03,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:03,734 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:58:03,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1837997225, now seen corresponding path program 1 times [2024-11-28 04:58:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508980160] [2024-11-28 04:58:03,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:03,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:03,736 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:03,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:58:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:04,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:58:04,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:05,356 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:58:05,356 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 04:58:05,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:58:06,825 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:06,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 04:58:07,074 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:07,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 04:58:07,328 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:07,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 04:58:07,601 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:07,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:58:07,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:58:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:58:07,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:08,179 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:58:08,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 04:58:08,205 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem40#1.base|)) is different from false [2024-11-28 04:58:08,238 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-28 04:58:08,285 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6744)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 04:58:08,319 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:58:08,368 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6743))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:58:08,403 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6743))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 04:58:09,415 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6791 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6791))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6743)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:58:09,423 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508980160] [2024-11-28 04:58:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508980160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [332611376] [2024-11-28 04:58:09,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:09,423 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:58:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:58:09,425 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:58:09,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-28 04:58:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:25,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:58:25,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:25,366 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 04:58:26,324 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:58:26,324 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 04:58:26,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:58:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 04:58:30,680 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:30,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:58:31,231 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:31,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:58:31,669 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:31,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:58:32,141 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:58:32,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:58:32,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:58:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:58:32,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:32,968 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:58:33,019 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7246))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:58:33,055 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:58:33,109 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7245))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:58:33,149 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7245))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:58:34,201 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7293))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7245)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:58:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [332611376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:34,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:58:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-28 04:58:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610442142] [2024-11-28 04:58:34,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:34,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:58:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:34,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:58:34,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=465, Unknown=25, NotChecked=728, Total=1332 [2024-11-28 04:58:34,212 INFO L87 Difference]: Start difference. First operand 1424 states and 1688 transitions. Second operand has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:59:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:06,443 INFO L93 Difference]: Finished difference Result 1433 states and 1697 transitions. [2024-11-28 04:59:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:59:06,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 128 [2024-11-28 04:59:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:06,446 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 04:59:06,446 INFO L226 Difference]: Without dead ends: 1433 [2024-11-28 04:59:06,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=123, Invalid=503, Unknown=26, NotChecked=754, Total=1406 [2024-11-28 04:59:06,447 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 843 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 4442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:06,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 5316 Invalid, 4452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4442 Invalid, 0 Unknown, 0 Unchecked, 31.9s Time] [2024-11-28 04:59:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-28 04:59:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1423. [2024-11-28 04:59:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 954 states have (on average 1.719077568134172) internal successors, (1640), 1410 states have internal predecessors, (1640), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:59:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1687 transitions. [2024-11-28 04:59:06,463 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1687 transitions. Word has length 128 [2024-11-28 04:59:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:06,463 INFO L471 AbstractCegarLoop]: Abstraction has 1423 states and 1687 transitions. [2024-11-28 04:59:06,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:59:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1687 transitions. [2024-11-28 04:59:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:59:06,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:06,465 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:06,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-28 04:59:06,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 04:59:06,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:06,866 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:59:06,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1837997226, now seen corresponding path program 1 times [2024-11-28 04:59:06,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:59:06,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038822935] [2024-11-28 04:59:06,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:06,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:06,869 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:06,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:59:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:07,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-28 04:59:07,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:08,357 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 04:59:08,423 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:59:08,423 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 04:59:08,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:59:08,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:59:08,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:59:09,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:59:11,805 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:11,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:59:11,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:12,265 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 04:59:12,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2024-11-28 04:59:12,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:12,929 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-28 04:59:12,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2024-11-28 04:59:12,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:13,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:59:13,377 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:13,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:59:13,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:13,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:59:13,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:59:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:59:13,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:14,253 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:59:14,315 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:59:14,451 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7795) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7794))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7795) .cse2 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:59:14,569 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7795) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7794))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7795) .cse3 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 04:59:14,850 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) (.cse4 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse4 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7793) .cse1 v_ArrVal_7795) (select (select (store .cse2 .cse1 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7796))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse4 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_7794))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7793) .cse5 v_ArrVal_7795) .cse6 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:59:15,117 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (select |c_#memory_$Pointer$#1.base| .cse1))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 (store .cse5 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7793) .cse2 v_ArrVal_7795) (select (select (store .cse3 .cse2 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7796))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse1 (store .cse5 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_7794))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7793) .cse6 v_ArrVal_7795) .cse7 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:59:17,865 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7889))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 (store (select .cse5 .cse1) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7888) .cse1 v_ArrVal_7793) .cse2 v_ArrVal_7795) (select (select (store .cse3 .cse2 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7796))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7889))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 (store (select .cse11 .cse6) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7794))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7888) .cse6 v_ArrVal_7793) .cse7 v_ArrVal_7795) .cse8 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:59:17,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:59:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038822935] [2024-11-28 04:59:17,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038822935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [199432924] [2024-11-28 04:59:17,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:17,989 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:59:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:59:17,991 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:59:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-28 04:59:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:33,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 04:59:33,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:33,090 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 04:59:33,864 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:59:33,865 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 04:59:33,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:59:33,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:59:33,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:59:34,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:59:34,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:59:37,020 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:37,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:59:37,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:37,318 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:37,318 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 62 treesize of output 57 [2024-11-28 04:59:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:37,761 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:37,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:59:37,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:38,005 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:38,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:59:38,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:59:38,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 04:59:38,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 04:59:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:59:38,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:38,382 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:59:38,443 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-28 04:59:38,574 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8392) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8391))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8392) .cse2 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:59:38,646 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8391))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8392) .cse1 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8392) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-28 04:59:39,341 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8389))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8390) .cse1 v_ArrVal_8392) (select (select (store .cse2 .cse1 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8393))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8389))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8391))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8390) .cse4 v_ArrVal_8392) .cse5 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:59:39,718 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8389))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8391))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8390) .cse1 v_ArrVal_8392) .cse2 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8389))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8390) .cse7 v_ArrVal_8392) (select (select (store .cse8 .cse7 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8393))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-28 04:59:46,933 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8486))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8389))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8485) .cse1 v_ArrVal_8390) .cse2 v_ArrVal_8392) (select (select (store .cse3 .cse2 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8393))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8486))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8389))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8391))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8485) .cse6 v_ArrVal_8390) .cse7 v_ArrVal_8392) .cse8 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:59:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [199432924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:46,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:59:46,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2024-11-28 04:59:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503161699] [2024-11-28 04:59:46,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:46,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:59:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:59:46,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:59:46,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=208, Unknown=14, NotChecked=574, Total=870 [2024-11-28 04:59:46,992 INFO L87 Difference]: Start difference. First operand 1423 states and 1687 transitions. Second operand has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:00:07,693 WARN L539 Checker$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 05:03:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:51,660 INFO L93 Difference]: Finished difference Result 1430 states and 1694 transitions. [2024-11-28 05:03:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:03:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2024-11-28 05:03:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:51,662 INFO L225 Difference]: With dead ends: 1430 [2024-11-28 05:03:51,662 INFO L226 Difference]: Without dead ends: 1430 [2024-11-28 05:03:51,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 249 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=129, Invalid=465, Unknown=14, NotChecked=798, Total=1406 [2024-11-28 05:03:51,663 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 797 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 7563 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 7571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:51,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 5741 Invalid, 7571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 7563 Invalid, 1 Unknown, 0 Unchecked, 239.6s Time] [2024-11-28 05:03:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-28 05:03:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1422. [2024-11-28 05:03:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 954 states have (on average 1.7180293501048218) internal successors, (1639), 1409 states have internal predecessors, (1639), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 05:03:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1686 transitions. [2024-11-28 05:03:51,674 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1686 transitions. Word has length 128 [2024-11-28 05:03:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:51,675 INFO L471 AbstractCegarLoop]: Abstraction has 1422 states and 1686 transitions. [2024-11-28 05:03:51,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 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 05:03:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1686 transitions. [2024-11-28 05:03:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 05:03:51,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:51,676 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:51,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 05:03:51,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-28 05:03:52,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:03:52,077 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 05:03:52,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2138882795, now seen corresponding path program 1 times [2024-11-28 05:03:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:03:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637856141] [2024-11-28 05:03:52,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:52,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:03:52,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:03:52,080 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:03:52,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:03:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:52,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 05:03:52,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:03:53,015 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 05:03:56,487 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:03:56,487 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 05:03:56,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 05:04:06,156 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:04:06,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:04:07,983 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:04:07,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:04:09,484 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:04:09,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:04:10,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:04:10,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:04:12,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:04:12,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:04:12,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 05:04:14,180 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:04:14,180 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 05:04:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:04:14,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:17,084 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8959) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:04:17,254 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8958))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:04:17,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:04:17,549 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8957 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8957))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:04:17,668 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8957 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8957))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 05:04:17,851 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8957 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8956 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8956))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8957)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:04:17,978 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8957 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8956 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8956))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8957)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:04:21,949 INFO L349 Elim1Store]: treesize reduction 7, result has 96.5 percent of original size [2024-11-28 05:04:21,950 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 205 treesize of output 204 [2024-11-28 05:04:22,072 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8957 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8956 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9006 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9006))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8956)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8957)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8958)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8959)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 05:04:22,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:04:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637856141] [2024-11-28 05:04:22,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637856141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032814395] [2024-11-28 05:04:22,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:22,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:04:22,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:04:22,107 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:04:22,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377b6da-2844-495b-ba12-4e7f724c98d5/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-28 05:04:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:31,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 05:04:31,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:31,522 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 05:04:35,388 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:04:35,388 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 05:04:36,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 05:04:39,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12