./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:15:59,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:15:59,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:15:59,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:15:59,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:15:59,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:15:59,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:15:59,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:15:59,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:15:59,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:15:59,522 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:15:59,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:15:59,522 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:15:59,522 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:15:59,522 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:15:59,523 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:15:59,523 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:15:59,524 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:15:59,524 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:15:59,524 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:15:59,525 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:15:59,525 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:15:59,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:15:59,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:15:59,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:15:59,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:15:59,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:15:59,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:15:59,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:15:59,526 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:15:59,526 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:15:59,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:15:59,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:15:59,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:15:59,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:15:59,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:15:59,530 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:15:59,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:15:59,530 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2024-11-14 03:15:59,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:15:59,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:15:59,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:15:59,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:15:59,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:15:59,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i Unable to find full path for "g++" [2024-11-14 03:16:02,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:16:02,517 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:16:02,518 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2024-11-14 03:16:02,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/def5810f0/91cbec2ee2ae468089f3aba65e2f9281/FLAG177f5da35 [2024-11-14 03:16:02,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/def5810f0/91cbec2ee2ae468089f3aba65e2f9281 [2024-11-14 03:16:02,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:16:02,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:16:02,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:16:02,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:16:02,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:16:02,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:16:02" (1/1) ... [2024-11-14 03:16:02,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8282a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:02, skipping insertion in model container [2024-11-14 03:16:02,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:16:02" (1/1) ... [2024-11-14 03:16:02,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:16:03,020 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:03,107 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:03,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:16:03,138 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) [2024-11-14 03:16:03,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24c985e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:03, skipping insertion in model container [2024-11-14 03:16:03,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:16:03,140 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 03:16:03,142 INFO L158 Benchmark]: Toolchain (without parser) took 579.91ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 77.7MB in the end (delta: 14.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:16:03,142 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:16:03,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.43ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 77.7MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:16:03,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.43ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 77.7MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:16:05,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:16:06,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 03:16:06,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:16:06,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:16:06,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:16:06,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:16:06,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:16:06,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:16:06,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:16:06,088 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:16:06,088 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:16:06,088 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:16:06,088 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:16:06,089 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:16:06,089 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:16:06,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:16:06,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:16:06,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:16:06,090 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:16:06,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:16:06,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:16:06,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:16:06,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:16:06,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:16:06,094 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:16:06,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:16:06,095 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:16:06,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2024-11-14 03:16:06,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:16:06,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:16:06,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:16:06,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:16:06,480 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:16:06,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i Unable to find full path for "g++" [2024-11-14 03:16:08,531 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:16:08,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:16:08,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2024-11-14 03:16:08,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/5d2658fce/eb62451a48404513b4d4425bdd5573e3/FLAG35a7355c2 [2024-11-14 03:16:08,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/data/5d2658fce/eb62451a48404513b4d4425bdd5573e3 [2024-11-14 03:16:08,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:16:08,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:16:08,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:16:08,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:16:08,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:16:08,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:16:08" (1/1) ... [2024-11-14 03:16:08,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba74471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:08, skipping insertion in model container [2024-11-14 03:16:08,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:16:08" (1/1) ... [2024-11-14 03:16:08,930 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:16:09,297 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:09,384 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:09,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:16:09,429 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 03:16:09,444 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:16:09,493 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:09,524 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:16:09,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:16:09,538 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:16:09,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:16:09,684 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:16:09,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09 WrapperNode [2024-11-14 03:16:09,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:16:09,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:16:09,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:16:09,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:16:09,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,776 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 57 [2024-11-14 03:16:09,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:16:09,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:16:09,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:16:09,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:16:09,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:16:09,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:16:09,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:16:09,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:16:09,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (1/1) ... [2024-11-14 03:16:09,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:16:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:16:09,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:16:09,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:16:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-14 03:16:09,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-14 03:16:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:16:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-11-14 03:16:09,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:16:09,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:16:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:16:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:16:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-14 03:16:09,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-14 03:16:09,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:16:09,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:16:10,182 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:16:10,186 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:16:10,715 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-14 03:16:10,716 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:16:10,737 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:16:10,737 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:16:10,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:16:10 BoogieIcfgContainer [2024-11-14 03:16:10,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:16:10,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:16:10,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:16:10,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:16:10,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:16:08" (1/3) ... [2024-11-14 03:16:10,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7312a68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:16:10, skipping insertion in model container [2024-11-14 03:16:10,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:16:09" (2/3) ... [2024-11-14 03:16:10,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7312a68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:16:10, skipping insertion in model container [2024-11-14 03:16:10,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:16:10" (3/3) ... [2024-11-14 03:16:10,783 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14_3.i [2024-11-14 03:16:10,804 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:16:10,806 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test14_3.i that has 5 procedures, 73 locations, 1 initial locations, 1 loop locations, and 26 error locations. [2024-11-14 03:16:10,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:16:10,867 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=FINITE_AUTOMATA, 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;@6c302939, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:16:10,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-14 03:16:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:16:10,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:10,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:10,881 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:10,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash 225826608, now seen corresponding path program 1 times [2024-11-14 03:16:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754541509] [2024-11-14 03:16:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:10,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:10,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:10,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 03:16:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:11,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:16:11,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:11,191 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 [2024-11-14 03:16:11,264 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-11-14 03:16:11,320 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 03:16:11,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:16:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:11,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:11,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:11,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754541509] [2024-11-14 03:16:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754541509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:11,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:11,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:16:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211646271] [2024-11-14 03:16:11,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:11,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:16:11,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:16:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-14 03:16:11,436 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:11,943 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2024-11-14 03:16:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:16:11,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:16:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:11,956 INFO L225 Difference]: With dead ends: 74 [2024-11-14 03:16:11,958 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 03:16:11,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2024-11-14 03:16:11,965 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:11,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 107 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 82 Unchecked, 0.4s Time] [2024-11-14 03:16:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 03:16:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-11-14 03:16:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 62 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2024-11-14 03:16:12,012 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 12 [2024-11-14 03:16:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:12,013 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2024-11-14 03:16:12,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2024-11-14 03:16:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:16:12,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:12,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:12,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 03:16:12,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:12,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:12,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 225826609, now seen corresponding path program 1 times [2024-11-14 03:16:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120926279] [2024-11-14 03:16:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:12,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:12,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:12,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:12,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 03:16:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:12,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:16:12,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:12,373 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 [2024-11-14 03:16:12,385 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 [2024-11-14 03:16:12,483 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:16:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:16:12,572 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 [2024-11-14 03:16:12,598 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:16:12,598 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 [2024-11-14 03:16:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:12,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:12,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:12,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120926279] [2024-11-14 03:16:12,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120926279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:12,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:12,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:16:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524818621] [2024-11-14 03:16:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:12,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:16:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:16:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2024-11-14 03:16:12,715 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:13,264 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2024-11-14 03:16:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:16:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:16:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:13,267 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:16:13,267 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:16:13,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2024-11-14 03:16:13,269 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:13,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 131 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 87 Unchecked, 0.5s Time] [2024-11-14 03:16:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:16:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-11-14 03:16:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-14 03:16:13,280 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 12 [2024-11-14 03:16:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:13,280 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-14 03:16:13,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-14 03:16:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:16:13,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:13,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:13,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:13,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:13,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:13,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash 838569493, now seen corresponding path program 1 times [2024-11-14 03:16:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:13,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001100119] [2024-11-14 03:16:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:13,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:13,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:13,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:13,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 03:16:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:13,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:16:13,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:13,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:13,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001100119] [2024-11-14 03:16:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001100119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:16:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306162991] [2024-11-14 03:16:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:13,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:13,609 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:13,648 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2024-11-14 03:16:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:16:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:16:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:13,650 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:16:13,650 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:16:13,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:13,651 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 1 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:13,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 271 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:16:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:16:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-14 03:16:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.65) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:16:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2024-11-14 03:16:13,669 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 11 [2024-11-14 03:16:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:13,670 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2024-11-14 03:16:13,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2024-11-14 03:16:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:16:13,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:13,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:13,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 03:16:13,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:13,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:13,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1726073174, now seen corresponding path program 1 times [2024-11-14 03:16:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:13,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431286923] [2024-11-14 03:16:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:13,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:13,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:13,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:13,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 03:16:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:13,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:16:13,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:13,972 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 [2024-11-14 03:16:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:14,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:14,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:14,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431286923] [2024-11-14 03:16:14,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431286923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:14,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:14,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:16:14,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259354580] [2024-11-14 03:16:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:14,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:14,046 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:14,518 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2024-11-14 03:16:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:16:14,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:16:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:14,521 INFO L225 Difference]: With dead ends: 95 [2024-11-14 03:16:14,521 INFO L226 Difference]: Without dead ends: 95 [2024-11-14 03:16:14,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:16:14,522 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:14,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 81 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:16:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-14 03:16:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2024-11-14 03:16:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 03:16:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2024-11-14 03:16:14,541 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 11 [2024-11-14 03:16:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:14,542 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2024-11-14 03:16:14,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2024-11-14 03:16:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:16:14,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:14,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:14,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:14,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:14,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:14,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1726073175, now seen corresponding path program 1 times [2024-11-14 03:16:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697309911] [2024-11-14 03:16:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:14,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:14,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:14,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 03:16:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:14,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:16:14,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:14,871 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 [2024-11-14 03:16:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:14,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:14,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697309911] [2024-11-14 03:16:14,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697309911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:14,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:14,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:16:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730856154] [2024-11-14 03:16:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:14,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:14,985 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:15,420 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-14 03:16:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:16:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:16:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:15,422 INFO L225 Difference]: With dead ends: 89 [2024-11-14 03:16:15,422 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 03:16:15,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:15,423 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 49 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:15,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 91 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:16:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 03:16:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2024-11-14 03:16:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.619047619047619) internal successors, (68), 66 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 03:16:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-14 03:16:15,433 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 11 [2024-11-14 03:16:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:15,434 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-14 03:16:15,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-14 03:16:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:16:15,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:15,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:15,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:15,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:15,638 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:15,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1681752525, now seen corresponding path program 1 times [2024-11-14 03:16:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:15,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578949475] [2024-11-14 03:16:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:15,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:15,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:15,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:15,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 03:16:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:15,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:16:15,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:17,793 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3|) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|)) is different from true [2024-11-14 03:16:17,902 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 15 treesize of output 7 [2024-11-14 03:16:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:17,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:17,960 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578949475] [2024-11-14 03:16:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578949475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:16:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201752227] [2024-11-14 03:16:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:16:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:16:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2024-11-14 03:16:17,963 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:18,371 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2024-11-14 03:16:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:16:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:16:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:18,372 INFO L225 Difference]: With dead ends: 76 [2024-11-14 03:16:18,372 INFO L226 Difference]: Without dead ends: 76 [2024-11-14 03:16:18,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-14 03:16:18,373 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 20 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:18,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 284 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 99 Unchecked, 0.3s Time] [2024-11-14 03:16:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-14 03:16:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-14 03:16:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 03:16:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-14 03:16:18,380 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 15 [2024-11-14 03:16:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:18,380 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-14 03:16:18,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-14 03:16:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:16:18,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:18,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:18,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 03:16:18,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:18,586 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:18,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1681752526, now seen corresponding path program 1 times [2024-11-14 03:16:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208116068] [2024-11-14 03:16:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:18,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:18,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:18,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 03:16:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:18,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:16:18,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:18,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:16:18,791 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 [2024-11-14 03:16:18,858 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 5 [2024-11-14 03:16:18,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 03:16:18,946 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (and (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)))))) is different from true [2024-11-14 03:16:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:16:19,029 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 [2024-11-14 03:16:19,055 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:16:19,056 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 [2024-11-14 03:16:19,383 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:16:19,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-14 03:16:19,394 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:16:19,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:16:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:19,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:19,519 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208116068] [2024-11-14 03:16:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208116068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:16:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43675823] [2024-11-14 03:16:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:19,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:16:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:19,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:16:19,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2024-11-14 03:16:19,522 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:20,858 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2024-11-14 03:16:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:16:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:16:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:20,862 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:16:20,862 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:16:20,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=165, Unknown=1, NotChecked=26, Total=240 [2024-11-14 03:16:20,863 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 28 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:20,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 322 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 90 Unchecked, 0.9s Time] [2024-11-14 03:16:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:16:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-14 03:16:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 64 states have internal predecessors, (66), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 03:16:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-14 03:16:20,875 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 15 [2024-11-14 03:16:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:20,878 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-14 03:16:20,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-14 03:16:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:16:20,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:20,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:20,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:21,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:21,080 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:21,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 594720773, now seen corresponding path program 1 times [2024-11-14 03:16:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519233668] [2024-11-14 03:16:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:21,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:21,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:21,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 03:16:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:21,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:16:21,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:21,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:16:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:21,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:21,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519233668] [2024-11-14 03:16:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519233668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:21,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:21,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:16:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371428916] [2024-11-14 03:16:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:21,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:16:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:16:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:16:21,320 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:21,861 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-14 03:16:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:16:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:16:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:21,863 INFO L225 Difference]: With dead ends: 90 [2024-11-14 03:16:21,864 INFO L226 Difference]: Without dead ends: 90 [2024-11-14 03:16:21,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:16:21,865 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 23 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:21,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 277 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:16:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-14 03:16:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2024-11-14 03:16:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 73 states have internal predecessors, (79), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-14 03:16:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2024-11-14 03:16:21,877 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 16 [2024-11-14 03:16:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:21,877 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2024-11-14 03:16:21,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2024-11-14 03:16:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:16:21,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:21,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:21,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-14 03:16:22,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:22,078 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:22,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 594720774, now seen corresponding path program 1 times [2024-11-14 03:16:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512582372] [2024-11-14 03:16:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:22,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:22,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:22,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:22,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-14 03:16:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:22,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:16:22,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:22,193 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 [2024-11-14 03:16:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:22,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:22,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512582372] [2024-11-14 03:16:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512582372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 03:16:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036343141] [2024-11-14 03:16:22,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:22,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:16:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:16:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:16:22,448 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:23,143 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2024-11-14 03:16:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:16:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:16:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:23,145 INFO L225 Difference]: With dead ends: 88 [2024-11-14 03:16:23,145 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 03:16:23,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:16:23,146 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 20 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:23,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 367 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:16:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 03:16:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-11-14 03:16:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-14 03:16:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2024-11-14 03:16:23,152 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 16 [2024-11-14 03:16:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:23,152 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-14 03:16:23,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2024-11-14 03:16:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:16:23,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:23,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:23,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-14 03:16:23,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:23,354 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:23,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 723803492, now seen corresponding path program 1 times [2024-11-14 03:16:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:23,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357038447] [2024-11-14 03:16:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:23,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:23,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:23,357 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:23,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 03:16:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:23,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:16:23,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:23,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:23,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:23,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357038447] [2024-11-14 03:16:23,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357038447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:23,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:23,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:16:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353392455] [2024-11-14 03:16:23,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:23,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:23,510 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:23,538 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2024-11-14 03:16:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:16:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:16:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:23,540 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:16:23,540 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:16:23,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:23,541 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:23,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:16:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:16:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 03:16:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:16:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-11-14 03:16:23,546 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 16 [2024-11-14 03:16:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:23,546 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-11-14 03:16:23,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-11-14 03:16:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:16:23,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:23,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:23,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:23,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:23,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:23,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1317711589, now seen corresponding path program 1 times [2024-11-14 03:16:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707053685] [2024-11-14 03:16:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:23,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:23,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 03:16:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:23,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:16:23,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:23,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:16:24,007 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 15 treesize of output 7 [2024-11-14 03:16:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:24,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:24,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:24,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707053685] [2024-11-14 03:16:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707053685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:16:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682828337] [2024-11-14 03:16:24,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:24,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:16:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:16:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:16:24,070 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:24,310 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2024-11-14 03:16:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:16:24,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:16:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:24,312 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:16:24,312 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:16:24,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:16:24,312 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 15 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:24,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 210 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:16:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:16:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-11-14 03:16:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:16:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-11-14 03:16:24,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 16 [2024-11-14 03:16:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:24,316 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-11-14 03:16:24,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-11-14 03:16:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 03:16:24,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:24,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:24,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 03:16:24,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:24,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:24,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 296014184, now seen corresponding path program 1 times [2024-11-14 03:16:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148231302] [2024-11-14 03:16:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:24,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:24,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:24,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:24,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-14 03:16:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:24,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:16:24,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:24,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:24,645 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148231302] [2024-11-14 03:16:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148231302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:16:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825736694] [2024-11-14 03:16:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:24,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:16:24,646 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:24,820 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-11-14 03:16:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:16:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-14 03:16:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:24,821 INFO L225 Difference]: With dead ends: 70 [2024-11-14 03:16:24,821 INFO L226 Difference]: Without dead ends: 70 [2024-11-14 03:16:24,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:16:24,822 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 9 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:24,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 158 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:16:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-14 03:16:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-14 03:16:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:16:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-11-14 03:16:24,827 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 18 [2024-11-14 03:16:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:24,827 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-11-14 03:16:24,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-11-14 03:16:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 03:16:24,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:24,827 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:24,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-14 03:16:25,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:25,028 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:25,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash 296014185, now seen corresponding path program 1 times [2024-11-14 03:16:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977933392] [2024-11-14 03:16:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:25,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:25,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:25,031 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:25,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 03:16:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:25,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:16:25,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:25,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:25,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:25,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977933392] [2024-11-14 03:16:25,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977933392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:25,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:25,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:16:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789165056] [2024-11-14 03:16:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:25,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:16:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:16:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:16:25,248 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:25,582 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2024-11-14 03:16:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:16:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-14 03:16:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:25,584 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:16:25,584 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:16:25,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:16:25,589 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:25,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 316 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:16:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:16:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 03:16:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:16:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-11-14 03:16:25,594 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 18 [2024-11-14 03:16:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:25,594 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-11-14 03:16:25,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:16:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-11-14 03:16:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:16:25,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:25,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:16:25,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:25,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:25,799 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:25,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1317609563, now seen corresponding path program 1 times [2024-11-14 03:16:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898616968] [2024-11-14 03:16:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:25,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:25,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 03:16:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:25,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:16:25,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:25,994 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#list_14~0#1.base_7| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_7| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_7|)))) is different from true [2024-11-14 03:16:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:26,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:26,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898616968] [2024-11-14 03:16:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898616968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:16:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453083299] [2024-11-14 03:16:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:26,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:16:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:16:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-14 03:16:26,006 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-14 03:16:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:26,281 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2024-11-14 03:16:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:16:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 16 [2024-11-14 03:16:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:26,282 INFO L225 Difference]: With dead ends: 72 [2024-11-14 03:16:26,282 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:16:26,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-14 03:16:26,283 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:26,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 68 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 72 Unchecked, 0.3s Time] [2024-11-14 03:16:26,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:16:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 03:16:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2024-11-14 03:16:26,287 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 16 [2024-11-14 03:16:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:26,287 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2024-11-14 03:16:26,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-14 03:16:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2024-11-14 03:16:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:16:26,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:26,288 INFO L215 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] [2024-11-14 03:16:26,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-14 03:16:26,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:26,489 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:26,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash 783634007, now seen corresponding path program 1 times [2024-11-14 03:16:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743109995] [2024-11-14 03:16:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:26,492 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:26,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-14 03:16:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:26,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:16:26,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:26,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:26,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743109995] [2024-11-14 03:16:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743109995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:26,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:16:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885501720] [2024-11-14 03:16:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:26,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:16:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:16:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:16:26,780 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:16:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:27,269 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-14 03:16:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:16:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-14 03:16:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:27,270 INFO L225 Difference]: With dead ends: 69 [2024-11-14 03:16:27,270 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:16:27,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:16:27,271 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:27,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 162 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:16:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:16:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2024-11-14 03:16:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2024-11-14 03:16:27,276 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 25 [2024-11-14 03:16:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:27,276 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2024-11-14 03:16:27,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:16:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2024-11-14 03:16:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:16:27,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:27,277 INFO L215 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] [2024-11-14 03:16:27,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-14 03:16:27,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:27,478 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:27,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash 783634008, now seen corresponding path program 1 times [2024-11-14 03:16:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:27,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795438758] [2024-11-14 03:16:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:27,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:27,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:27,481 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:27,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 03:16:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:27,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:16:27,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:27,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:27,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795438758] [2024-11-14 03:16:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795438758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:27,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:16:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941150253] [2024-11-14 03:16:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:27,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:16:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:16:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:16:27,818 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:16:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:28,170 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2024-11-14 03:16:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:16:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-14 03:16:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:28,176 INFO L225 Difference]: With dead ends: 59 [2024-11-14 03:16:28,176 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 03:16:28,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:16:28,177 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:28,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 218 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:16:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 03:16:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-14 03:16:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:16:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2024-11-14 03:16:28,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 25 [2024-11-14 03:16:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2024-11-14 03:16:28,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:16:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2024-11-14 03:16:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:16:28,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:28,181 INFO L215 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] [2024-11-14 03:16:28,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-14 03:16:28,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:28,382 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:28,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1758929540, now seen corresponding path program 1 times [2024-11-14 03:16:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606561899] [2024-11-14 03:16:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:28,388 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:28,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 03:16:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:28,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-14 03:16:28,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:28,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:16:28,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:16:29,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:16:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:29,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:29,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606561899] [2024-11-14 03:16:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606561899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-14 03:16:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443867773] [2024-11-14 03:16:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:29,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:16:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:16:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:16:29,287 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:30,992 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-14 03:16:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:16:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 03:16:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:30,994 INFO L225 Difference]: With dead ends: 79 [2024-11-14 03:16:30,994 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 03:16:30,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-14 03:16:30,995 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:30,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 225 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 03:16:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 03:16:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2024-11-14 03:16:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 61 states have internal predecessors, (71), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:16:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2024-11-14 03:16:30,998 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 30 [2024-11-14 03:16:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:30,999 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2024-11-14 03:16:30,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2024-11-14 03:16:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:16:30,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:31,000 INFO L215 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] [2024-11-14 03:16:31,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 03:16:31,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:31,200 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:31,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1758929541, now seen corresponding path program 1 times [2024-11-14 03:16:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803056054] [2024-11-14 03:16:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:31,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:31,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-14 03:16:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:31,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 03:16:31,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:31,368 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 [2024-11-14 03:16:31,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:16:31,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:16:32,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-14 03:16:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:32,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:32,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803056054] [2024-11-14 03:16:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803056054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:32,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-14 03:16:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136833906] [2024-11-14 03:16:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:32,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:16:32,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:16:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:16:32,281 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:33,808 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2024-11-14 03:16:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:16:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 03:16:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:33,809 INFO L225 Difference]: With dead ends: 77 [2024-11-14 03:16:33,809 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 03:16:33,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-14 03:16:33,810 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:33,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 254 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:16:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 03:16:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2024-11-14 03:16:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.4) internal successors, (70), 62 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:16:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2024-11-14 03:16:33,813 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 30 [2024-11-14 03:16:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:33,814 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2024-11-14 03:16:33,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2024-11-14 03:16:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 03:16:33,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:33,815 INFO L215 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] [2024-11-14 03:16:33,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-14 03:16:34,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:34,015 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:34,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1758827514, now seen corresponding path program 1 times [2024-11-14 03:16:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:34,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941174645] [2024-11-14 03:16:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:34,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:34,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:34,020 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:34,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-14 03:16:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:34,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 03:16:34,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:34,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:16:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:34,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:34,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:34,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941174645] [2024-11-14 03:16:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941174645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:34,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-14 03:16:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233737278] [2024-11-14 03:16:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:34,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:16:34,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:16:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:16:34,510 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:16:34,992 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2024-11-14 03:16:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:16:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 03:16:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:16:34,994 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:16:34,994 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:16:34,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:16:34,995 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:16:34,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 490 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:16:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:16:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-14 03:16:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.38) internal successors, (69), 62 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:16:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2024-11-14 03:16:34,999 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 30 [2024-11-14 03:16:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:16:34,999 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2024-11-14 03:16:34,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2024-11-14 03:16:34,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:16:34,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:16:34,999 INFO L215 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] [2024-11-14 03:16:35,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-14 03:16:35,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:35,201 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:16:35,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:16:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1668947806, now seen corresponding path program 1 times [2024-11-14 03:16:35,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:16:35,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24896179] [2024-11-14 03:16:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:16:35,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:16:35,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:16:35,204 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:16:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 03:16:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:16:35,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-14 03:16:35,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:35,417 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-14 03:16:35,417 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 22 [2024-11-14 03:16:35,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:16:35,478 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 17 treesize of output 23 [2024-11-14 03:16:35,599 INFO L349 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2024-11-14 03:16:35,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2024-11-14 03:16:36,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:16:36,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:16:36,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:16:36,289 INFO L349 Elim1Store]: treesize reduction 66, result has 35.9 percent of original size [2024-11-14 03:16:36,289 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2024-11-14 03:16:36,681 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:16:36,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2024-11-14 03:16:36,897 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 40 treesize of output 28 [2024-11-14 03:16:37,798 INFO L349 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2024-11-14 03:16:37,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 17 [2024-11-14 03:16:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:16:38,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:16:38,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:16:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24896179] [2024-11-14 03:16:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24896179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:16:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:16:38,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-14 03:16:38,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826742400] [2024-11-14 03:16:38,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:16:38,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 03:16:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:16:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 03:16:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-14 03:16:38,048 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:16:41,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:44,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:46,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:48,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:51,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:53,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:55,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:16:57,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:00,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:02,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:04,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:06,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:08,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:10,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:12,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:14,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:16,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:18,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:21,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:23,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:25,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:27,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:29,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:31,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:33,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:35,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:37,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:39,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:41,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:43,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:17:43,740 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-14 03:17:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 03:17:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-14 03:17:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:17:43,741 INFO L225 Difference]: With dead ends: 74 [2024-11-14 03:17:43,741 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 03:17:43,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=254, Invalid=2196, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 03:17:43,743 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 112 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 31 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:17:43,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 297 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 840 Invalid, 30 Unknown, 0 Unchecked, 63.2s Time] [2024-11-14 03:17:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 03:17:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-14 03:17:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.36) internal successors, (68), 62 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:17:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2024-11-14 03:17:43,748 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 33 [2024-11-14 03:17:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:17:43,748 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2024-11-14 03:17:43,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:17:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2024-11-14 03:17:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:17:43,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:17:43,749 INFO L215 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] [2024-11-14 03:17:43,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2024-11-14 03:17:43,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:17:43,950 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:17:43,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:17:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1668947807, now seen corresponding path program 1 times [2024-11-14 03:17:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:17:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358148857] [2024-11-14 03:17:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:17:43,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:17:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:17:43,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:17:43,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-14 03:17:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:17:44,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-14 03:17:44,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:17:44,176 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 [2024-11-14 03:17:44,237 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 5 [2024-11-14 03:17:44,362 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:17:44,362 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 [2024-11-14 03:17:45,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:17:45,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:17:45,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 03:17:45,220 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 21 treesize of output 20 [2024-11-14 03:17:45,499 INFO L349 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2024-11-14 03:17:45,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 52 [2024-11-14 03:17:45,596 INFO L349 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2024-11-14 03:17:45,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 38 [2024-11-14 03:17:46,433 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:17:46,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 100 [2024-11-14 03:17:46,533 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:17:46,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:17:48,431 INFO L349 Elim1Store]: treesize reduction 104, result has 6.3 percent of original size [2024-11-14 03:17:48,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 59 [2024-11-14 03:17:48,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:17:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:17:48,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:17:48,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:17:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358148857] [2024-11-14 03:17:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358148857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:17:48,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:17:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-14 03:17:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045259848] [2024-11-14 03:17:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:17:48,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:17:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:17:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:17:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:17:48,671 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:17:53,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:55,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:17:59,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:01,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:03,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:07,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:09,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:12,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:18:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:18:14,281 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2024-11-14 03:18:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 03:18:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-14 03:18:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:18:14,283 INFO L225 Difference]: With dead ends: 75 [2024-11-14 03:18:14,284 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 03:18:14,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 03:18:14,285 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:18:14,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 438 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 746 Invalid, 8 Unknown, 0 Unchecked, 22.3s Time] [2024-11-14 03:18:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 03:18:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-14 03:18:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.34) internal successors, (67), 62 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:18:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2024-11-14 03:18:14,289 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 33 [2024-11-14 03:18:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:18:14,289 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2024-11-14 03:18:14,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:18:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2024-11-14 03:18:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 03:18:14,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:18:14,290 INFO L215 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] [2024-11-14 03:18:14,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2024-11-14 03:18:14,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:18:14,491 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:18:14,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:18:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 197774474, now seen corresponding path program 1 times [2024-11-14 03:18:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:18:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673461925] [2024-11-14 03:18:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:18:14,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:18:14,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:18:14,495 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:18:14,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-14 03:18:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:18:14,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:18:14,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:18:14,742 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 [2024-11-14 03:18:15,043 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:18:15,043 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 [2024-11-14 03:18:16,135 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 [2024-11-14 03:18:16,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:18:17,523 INFO L349 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2024-11-14 03:18:17,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-14 03:18:18,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-14 03:18:20,428 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:18:20,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2024-11-14 03:18:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:18:20,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:18:20,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:18:20,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673461925] [2024-11-14 03:18:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673461925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:18:20,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:18:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-14 03:18:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924571838] [2024-11-14 03:18:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:18:20,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:18:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:18:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:18:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:18:20,987 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:18:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:18:31,192 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-11-14 03:18:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:18:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-14 03:18:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:18:31,195 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:18:31,195 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 03:18:31,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=182, Invalid=1458, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 03:18:31,197 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 75 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:18:31,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 191 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-14 03:18:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 03:18:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-14 03:18:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.32) internal successors, (66), 62 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:18:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-14 03:18:31,205 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 34 [2024-11-14 03:18:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:18:31,206 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-14 03:18:31,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:18:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-14 03:18:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 03:18:31,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:18:31,207 INFO L215 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] [2024-11-14 03:18:31,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-11-14 03:18:31,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:18:31,411 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:18:31,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:18:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 197774475, now seen corresponding path program 1 times [2024-11-14 03:18:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:18:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780937775] [2024-11-14 03:18:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:18:31,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:18:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:18:31,414 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:18:31,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 03:18:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:18:31,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-14 03:18:31,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:18:31,662 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 [2024-11-14 03:18:31,701 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 [2024-11-14 03:18:32,070 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:18:32,070 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 [2024-11-14 03:18:32,096 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 [2024-11-14 03:18:33,078 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 [2024-11-14 03:18:33,152 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 [2024-11-14 03:18:37,334 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2024-11-14 03:18:37,334 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 44 [2024-11-14 03:18:38,275 INFO L349 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2024-11-14 03:18:38,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-14 03:18:42,134 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2024-11-14 03:18:42,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 27 [2024-11-14 03:18:42,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:18:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:18:42,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:18:42,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:18:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780937775] [2024-11-14 03:18:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780937775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:18:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:18:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-14 03:18:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824150598] [2024-11-14 03:18:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:18:42,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:18:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:18:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:18:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:18:42,873 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 21 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:19:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:05,861 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2024-11-14 03:19:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 03:19:05,863 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-14 03:19:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:05,864 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:19:05,864 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 03:19:05,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=152, Invalid=1103, Unknown=5, NotChecked=0, Total=1260 [2024-11-14 03:19:05,865 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:05,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 229 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-14 03:19:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 03:19:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-14 03:19:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.3) internal successors, (65), 62 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:19:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2024-11-14 03:19:05,872 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 34 [2024-11-14 03:19:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:05,872 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2024-11-14 03:19:05,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:19:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2024-11-14 03:19:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 03:19:05,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:05,873 INFO L215 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] [2024-11-14 03:19:05,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-14 03:19:06,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:19:06,074 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:19:06,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -193727144, now seen corresponding path program 1 times [2024-11-14 03:19:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:19:06,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367736998] [2024-11-14 03:19:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:06,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:19:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:19:06,077 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:19:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-14 03:19:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:06,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 03:19:06,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:19:07,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:19:08,994 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 23 treesize of output 11 [2024-11-14 03:19:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:10,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:19:10,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:19:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367736998] [2024-11-14 03:19:10,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367736998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:19:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:19:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-14 03:19:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250747562] [2024-11-14 03:19:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:19:10,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:19:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:19:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:19:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:19:10,174 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:19:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:13,828 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2024-11-14 03:19:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:19:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2024-11-14 03:19:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:13,830 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:19:13,830 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 03:19:13,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:19:13,831 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 35 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:13,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 358 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 03:19:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 03:19:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-14 03:19:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.28) internal successors, (64), 62 states have internal predecessors, (64), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:19:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-11-14 03:19:13,838 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 39 [2024-11-14 03:19:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:13,838 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-11-14 03:19:13,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:19:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-11-14 03:19:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 03:19:13,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:13,839 INFO L215 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] [2024-11-14 03:19:13,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-14 03:19:14,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:19:14,040 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 03:19:14,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1488189285, now seen corresponding path program 1 times [2024-11-14 03:19:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:19:14,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516568532] [2024-11-14 03:19:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:14,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:19:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:19:14,043 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:19:14,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-14 03:19:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:19:14,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 03:19:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:19:14,379 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 03:19:14,380 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 03:19:14,381 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 26 remaining) [2024-11-14 03:19:14,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2024-11-14 03:19:14,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2024-11-14 03:19:14,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2024-11-14 03:19:14,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (20 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (19 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (18 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 26 remaining) [2024-11-14 03:19:14,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2024-11-14 03:19:14,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2024-11-14 03:19:14,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2024-11-14 03:19:14,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2024-11-14 03:19:14,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2024-11-14 03:19:14,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2024-11-14 03:19:14,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-11-14 03:19:14,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:19:14,590 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-14 03:19:14,621 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:19:14,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:19:14 BoogieIcfgContainer [2024-11-14 03:19:14,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:19:14,625 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:19:14,625 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:19:14,625 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:19:14,626 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:16:10" (3/4) ... [2024-11-14 03:19:14,627 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 03:19:14,683 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:19:14,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:19:14,684 INFO L158 Benchmark]: Toolchain (without parser) took 185795.67ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 54.6MB in the end (delta: 38.7MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2024-11-14 03:19:14,684 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:19:14,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.06ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 65.0MB in the end (delta: 28.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 03:19:14,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.03ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 63.1MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:19:14,685 INFO L158 Benchmark]: Boogie Preprocessor took 72.99ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 61.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:19:14,685 INFO L158 Benchmark]: RCFGBuilder took 889.22ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 39.2MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:19:14,685 INFO L158 Benchmark]: TraceAbstraction took 183877.60ms. Allocated memory is still 117.4MB. Free memory was 38.6MB in the beginning and 57.9MB in the end (delta: -19.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:19:14,685 INFO L158 Benchmark]: Witness Printer took 58.17ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 54.6MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:19:14,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.06ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 65.0MB in the end (delta: 28.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.03ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 63.1MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.99ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 61.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 889.22ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 39.2MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 183877.60ms. Allocated memory is still 117.4MB. Free memory was 38.6MB in the beginning and 57.9MB in the end (delta: -19.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.17ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 54.6MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L780] CALL entry_point() [L775] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L776] CALL alloc_14(&list_14) [L762] CALL, EXPR ldv_malloc(sizeof(struct A14)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A14)) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}] [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, p={2:0}] [L764] CALL ldv_list_add(&p->list, list) VAL [\old(head)={-2147483647:0}, \old(new)={2:4}, ldv_global_msg_list={1:0}] [L559] EXPR head->next VAL [\old(head)={-2147483647:0}, \old(new)={2:4}, head={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [\old(new)={2:4}, \old(next)={-2147483647:0}, \old(prev)={-2147483647:0}, ldv_global_msg_list={1:0}] [L547] next->prev = new VAL [\old(new)={2:4}, \old(next)={-2147483647:0}, \old(prev)={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, next={-2147483647:0}, prev={-2147483647:0}] [L548] new->next = next VAL [\old(new)={2:4}, \old(next)={-2147483647:0}, \old(prev)={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, prev={-2147483647:0}] [L549] new->prev = prev VAL [\old(new)={2:4}, \old(next)={-2147483647:0}, \old(prev)={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, prev={-2147483647:0}] [L550] prev->next = new VAL [\old(new)={2:4}, \old(next)={-2147483647:0}, \old(prev)={-2147483647:0}, ldv_global_msg_list={1:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [\old(head)={-2147483647:0}, \old(new)={2:4}, head={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}] [L764] RET ldv_list_add(&p->list, list) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, p={2:0}] [L776] RET alloc_14(&list_14) [L777] CALL free_14(&list_14) [L768] struct A14 *p; VAL [ldv_global_msg_list={1:0}, plist={-2147483647:0}] [L769] EXPR (plist)->next VAL [ldv_global_msg_list={1:0}, plist={-2147483647:0}] [L769] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); [L769] { const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );} [L769] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) [L769] COND TRUE &p->list != (plist) VAL [ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}] [L770] CALL ldv_list_del(&p->list) VAL [ldv_global_msg_list={1:0}] [L567] EXPR entry->prev VAL [\old(entry)={2:4}, entry={2:4}, ldv_global_msg_list={1:0}] [L567] EXPR entry->next VAL [\old(entry)={2:4}, ldv_global_msg_list={1:0}] [L567] CALL __ldv_list_del(entry->prev, entry->next) [L554] next->prev = prev VAL [ldv_global_msg_list={1:0}, next={-2147483647:0}, prev={-2147483647:0}] [L555] prev->next = next VAL [ldv_global_msg_list={1:0}] [L567] RET __ldv_list_del(entry->prev, entry->next) [L770] RET ldv_list_del(&p->list) VAL [ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}] [L771] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}] [L771] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}, plist={-2147483647:0}] [L771] free(p) [L769] (p)->list.next - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 183.8s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 138.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 mSolverCounterUnknown, 916 SdHoareTripleChecker+Valid, 110.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 887 mSDsluCounter, 5798 SdHoareTripleChecker+Invalid, 107.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 430 IncrementalHoareTripleChecker+Unchecked, 4799 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7117 IncrementalHoareTripleChecker+Invalid, 7724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 999 mSDtfsCounter, 7117 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 265 SyntacticMatches, 6 SemanticMatches, 343 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 46.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=8, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 79 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 36.0s InterpolantComputationTime, 557 NumberOfCodeBlocks, 557 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 492 ConstructedInterpolants, 191 QuantifiedInterpolants, 7753 SizeOfPredicates, 167 NumberOfNonLiveVariables, 2978 ConjunctsInSsa, 575 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 03:19:14,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e172bc4-3aee-4a11-8a83-4675f38343b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)