./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:45:01,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:45:01,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 02:45:01,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:45:01,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:45:01,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:45:01,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:45:01,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:45:01,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:45:01,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:45:01,660 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:45:01,660 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:45:01,661 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:45:01,661 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:45:01,661 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:45:01,661 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:45:01,661 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:45:01,662 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:45:01,662 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:45:01,662 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:45:01,662 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:45:01,662 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:45:01,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:45:01,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:45:01,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:45:01,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:45:01,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:45:01,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:45:01,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:45:01,664 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:45:01,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:45:01,666 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:45:01,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:45:01,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:45:01,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:45:01,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:45:01,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:45:01,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:45:01,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:45:01,667 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:45:01,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:45:01,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:45:01,668 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:45:01,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:45:01,668 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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-14 02:45:02,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:45:02,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:45:02,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:45:02,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:45:02,072 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:45:02,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i Unable to find full path for "g++" [2024-11-14 02:45:04,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:45:04,721 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:45:04,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-14 02:45:04,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/84945ea95/916a8614d6214db094765462ba562c10/FLAGff2c94749 [2024-11-14 02:45:04,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/84945ea95/916a8614d6214db094765462ba562c10 [2024-11-14 02:45:04,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:45:04,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:45:04,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:45:04,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:45:04,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:45:04,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:45:04" (1/1) ... [2024-11-14 02:45:04,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590e8e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:04, skipping insertion in model container [2024-11-14 02:45:04,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:45:04" (1/1) ... [2024-11-14 02:45:04,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:45:05,360 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 02:45:05,406 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 02:45:05,417 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 02:45:05,430 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 02:45:05,448 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 02:45:05,466 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 02:45:05,467 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 02:45:05,475 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 02:45:05,477 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 02:45:05,479 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 02:45:05,480 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 02:45:05,488 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 02:45:05,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:45:05,510 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 02:45:05,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34783cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:05, skipping insertion in model container [2024-11-14 02:45:05,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:45:05,516 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 02:45:05,518 INFO L158 Benchmark]: Toolchain (without parser) took 751.80ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 99.7MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:45:05,522 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:45:05,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.68ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 99.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:45:05,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.68ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 99.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:45:08,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:45:08,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 02:45:08,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:45:08,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:45:08,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:45:08,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:45:08,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:45:08,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:45:08,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:45:08,805 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:45:08,806 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:45:08,806 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:45:08,807 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:45:08,807 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:45:08,807 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:45:08,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:45:08,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:45:08,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:45:08,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:45:08,810 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:45:08,810 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:45:08,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:45:08,811 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:45:08,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:45:08,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:45:08,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:45:08,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:45:08,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:45:08,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:45:08,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:45:08,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:45:08,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:45:08,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:45:08,814 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:45:08,814 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:45:08,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:45:08,814 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:45:08,814 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_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-14 02:45:09,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:45:09,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:45:09,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:45:09,191 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:45:09,191 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:45:09,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i Unable to find full path for "g++" [2024-11-14 02:45:11,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:45:12,035 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:45:12,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-14 02:45:12,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/7c99cf98d/8920d13823aa40bbadd2ef02f9a9a0b1/FLAGa72cb4d53 [2024-11-14 02:45:12,589 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/data/7c99cf98d/8920d13823aa40bbadd2ef02f9a9a0b1 [2024-11-14 02:45:12,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:45:12,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:45:12,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:45:12,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:45:12,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:45:12,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:45:12" (1/1) ... [2024-11-14 02:45:12,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ea276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:12, skipping insertion in model container [2024-11-14 02:45:12,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:45:12" (1/1) ... [2024-11-14 02:45:12,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:45:13,167 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 02:45:13,210 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 02:45:13,216 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 02:45:13,223 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 02:45:13,234 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 02:45:13,256 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 02:45:13,257 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 02:45:13,261 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 02:45:13,263 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 02:45:13,265 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 02:45:13,266 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 02:45:13,274 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 02:45:13,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:45:13,307 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 02:45:13,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:45:13,433 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 02:45:13,482 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 02:45:13,489 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 02:45:13,504 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 02:45:13,516 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 02:45:13,532 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 02:45:13,533 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 02:45:13,537 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 02:45:13,538 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 02:45:13,539 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 02:45:13,540 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 02:45:13,545 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 02:45:13,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:45:13,554 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:45:13,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:45:13,724 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:45:13,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13 WrapperNode [2024-11-14 02:45:13,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:45:13,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:45:13,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:45:13,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:45:13,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,864 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 784 [2024-11-14 02:45:13,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:45:13,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:45:13,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:45:13,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:45:13,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:13,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:14,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:14,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:14,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:14,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:45:14,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:45:14,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:45:14,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:45:14,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (1/1) ... [2024-11-14 02:45:14,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:45:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:45:14,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:45:14,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:45:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-14 02:45:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 02:45:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 02:45:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 02:45:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 02:45:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:45:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:45:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:45:14,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:45:14,417 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:45:14,421 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-14 02:45:18,929 INFO L? ?]: Removed 903 outVars from TransFormulas that were not future-live. [2024-11-14 02:45:18,929 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:45:18,956 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:45:18,957 INFO L316 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-14 02:45:18,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:45:18 BoogieIcfgContainer [2024-11-14 02:45:18,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:45:18,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:45:18,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:45:18,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:45:18,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:45:12" (1/3) ... [2024-11-14 02:45:18,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5761f802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:45:18, skipping insertion in model container [2024-11-14 02:45:18,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:45:13" (2/3) ... [2024-11-14 02:45:18,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5761f802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:45:18, skipping insertion in model container [2024-11-14 02:45:18,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:45:18" (3/3) ... [2024-11-14 02:45:18,968 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2024-11-14 02:45:18,984 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:45:18,985 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test1-2.i that has 3 procedures, 857 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2024-11-14 02:45:19,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:45:19,071 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;@403502be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:45:19,071 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-14 02:45:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 857 states, 419 states have (on average 2.2291169451073984) internal successors, (934), 851 states have internal predecessors, (934), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:45:19,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:19,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 02:45:19,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:19,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2024-11-14 02:45:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176683225] [2024-11-14 02:45:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:19,098 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 02:45:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:19,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:19,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 02:45:19,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:19,289 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 02:45:19,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:19,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:19,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176683225] [2024-11-14 02:45:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176683225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:19,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:45:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787241340] [2024-11-14 02:45:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:19,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 02:45:19,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:19,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 02:45:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 02:45:19,326 INFO L87 Difference]: Start difference. First operand has 857 states, 419 states have (on average 2.2291169451073984) internal successors, (934), 851 states have internal predecessors, (934), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:19,401 INFO L93 Difference]: Finished difference Result 847 states and 904 transitions. [2024-11-14 02:45:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 02:45:19,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 02:45:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:19,432 INFO L225 Difference]: With dead ends: 847 [2024-11-14 02:45:19,433 INFO L226 Difference]: Without dead ends: 845 [2024-11-14 02:45:19,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 02:45:19,449 INFO L432 NwaCegarLoop]: 904 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:19,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:45:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-14 02:45:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-11-14 02:45:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 413 states have (on average 2.1210653753026634) internal successors, (876), 839 states have internal predecessors, (876), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 902 transitions. [2024-11-14 02:45:19,653 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 902 transitions. Word has length 5 [2024-11-14 02:45:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:19,654 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 902 transitions. [2024-11-14 02:45:19,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 902 transitions. [2024-11-14 02:45:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:45:19,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:19,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 02:45:19,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:19,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2024-11-14 02:45:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245567972] [2024-11-14 02:45:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:19,860 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 02:45:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:19,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:19,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:45:19,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:20,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:45:20,051 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 02:45:20,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:20,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:20,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245567972] [2024-11-14 02:45:20,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245567972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:20,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:45:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404046237] [2024-11-14 02:45:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:20,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:45:20,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:45:20,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:20,054 INFO L87 Difference]: Start difference. First operand 845 states and 902 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:21,972 INFO L93 Difference]: Finished difference Result 798 states and 856 transitions. [2024-11-14 02:45:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:45:21,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 02:45:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:21,978 INFO L225 Difference]: With dead ends: 798 [2024-11-14 02:45:21,979 INFO L226 Difference]: Without dead ends: 798 [2024-11-14 02:45:21,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:21,982 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 535 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:21,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 659 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 02:45:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-14 02:45:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 796. [2024-11-14 02:45:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 413 states have (on average 2.002421307506053) internal successors, (827), 790 states have internal predecessors, (827), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 853 transitions. [2024-11-14 02:45:22,033 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 853 transitions. Word has length 5 [2024-11-14 02:45:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:22,033 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 853 transitions. [2024-11-14 02:45:22,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 853 transitions. [2024-11-14 02:45:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:45:22,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:22,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 02:45:22,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Ended with exit code 0 [2024-11-14 02:45:22,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:22,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:22,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2024-11-14 02:45:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:22,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432292519] [2024-11-14 02:45:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:22,236 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 02:45:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:22,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:22,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:22,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:45:22,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:22,348 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 02:45:22,373 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 02:45:22,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:22,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432292519] [2024-11-14 02:45:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432292519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:22,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:45:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005628343] [2024-11-14 02:45:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:22,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:45:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:22,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:45:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:22,375 INFO L87 Difference]: Start difference. First operand 796 states and 853 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:24,637 INFO L93 Difference]: Finished difference Result 871 states and 932 transitions. [2024-11-14 02:45:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:45:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 02:45:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:24,643 INFO L225 Difference]: With dead ends: 871 [2024-11-14 02:45:24,643 INFO L226 Difference]: Without dead ends: 871 [2024-11-14 02:45:24,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:24,646 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 263 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:24,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1049 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 02:45:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-14 02:45:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 823. [2024-11-14 02:45:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 450 states have (on average 1.98) internal successors, (891), 817 states have internal predecessors, (891), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 917 transitions. [2024-11-14 02:45:24,680 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 917 transitions. Word has length 5 [2024-11-14 02:45:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:24,680 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 917 transitions. [2024-11-14 02:45:24,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 917 transitions. [2024-11-14 02:45:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 02:45:24,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:24,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 02:45:24,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:24,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:24,883 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr312REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:24,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1156709288, now seen corresponding path program 1 times [2024-11-14 02:45:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991312187] [2024-11-14 02:45:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:24,884 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 02:45:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:24,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:24,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:24,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:45:24,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:25,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:25,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:25,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991312187] [2024-11-14 02:45:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991312187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:25,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:25,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288803434] [2024-11-14 02:45:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:25,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:45:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:45:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:25,018 INFO L87 Difference]: Start difference. First operand 823 states and 917 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:25,161 INFO L93 Difference]: Finished difference Result 1396 states and 1553 transitions. [2024-11-14 02:45:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:45:25,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 02:45:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:25,174 INFO L225 Difference]: With dead ends: 1396 [2024-11-14 02:45:25,174 INFO L226 Difference]: Without dead ends: 1396 [2024-11-14 02:45:25,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:25,178 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 555 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:25,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1676 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:45:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2024-11-14 02:45:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 824. [2024-11-14 02:45:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 451 states have (on average 1.9778270509977827) internal successors, (892), 818 states have internal predecessors, (892), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 918 transitions. [2024-11-14 02:45:25,215 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 918 transitions. Word has length 6 [2024-11-14 02:45:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:25,216 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 918 transitions. [2024-11-14 02:45:25,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 918 transitions. [2024-11-14 02:45:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 02:45:25,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:25,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:25,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:25,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 334651421, now seen corresponding path program 1 times [2024-11-14 02:45:25,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:25,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706415979] [2024-11-14 02:45:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:25,421 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 02:45:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:25,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:25,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:45:25,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:25,594 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 02:45:25,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:25,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706415979] [2024-11-14 02:45:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706415979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:25,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:25,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126776113] [2024-11-14 02:45:25,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:45:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:45:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:25,596 INFO L87 Difference]: Start difference. First operand 824 states and 918 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:25,648 INFO L93 Difference]: Finished difference Result 782 states and 875 transitions. [2024-11-14 02:45:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:45:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 02:45:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:25,653 INFO L225 Difference]: With dead ends: 782 [2024-11-14 02:45:25,653 INFO L226 Difference]: Without dead ends: 782 [2024-11-14 02:45:25,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:25,656 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 71 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1513 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 02:45:25,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1513 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:45:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-14 02:45:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2024-11-14 02:45:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 433 states have (on average 1.9607390300230947) internal successors, (849), 776 states have internal predecessors, (849), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 875 transitions. [2024-11-14 02:45:25,678 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 875 transitions. Word has length 11 [2024-11-14 02:45:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:25,679 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 875 transitions. [2024-11-14 02:45:25,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 875 transitions. [2024-11-14 02:45:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:45:25,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:25,680 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:25,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,883 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:25,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash -522536810, now seen corresponding path program 1 times [2024-11-14 02:45:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408286757] [2024-11-14 02:45:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:25,884 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 02:45:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:25,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:25,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:26,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:45:26,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:26,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:26,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408286757] [2024-11-14 02:45:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408286757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:45:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281820340] [2024-11-14 02:45:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:26,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:26,085 INFO L87 Difference]: Start difference. First operand 782 states and 875 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:26,216 INFO L93 Difference]: Finished difference Result 760 states and 846 transitions. [2024-11-14 02:45:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:45:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 02:45:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:26,222 INFO L225 Difference]: With dead ends: 760 [2024-11-14 02:45:26,222 INFO L226 Difference]: Without dead ends: 760 [2024-11-14 02:45:26,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:26,223 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 48 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:26,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2203 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:45:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-14 02:45:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-11-14 02:45:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 425 states have (on average 1.9294117647058824) internal successors, (820), 754 states have internal predecessors, (820), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 846 transitions. [2024-11-14 02:45:26,251 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 846 transitions. Word has length 13 [2024-11-14 02:45:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:26,252 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 846 transitions. [2024-11-14 02:45:26,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 846 transitions. [2024-11-14 02:45:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:45:26,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:26,253 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] [2024-11-14 02:45:26,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:26,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:26,454 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:26,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:26,454 INFO L85 PathProgramCache]: Analyzing trace with hash -103996956, now seen corresponding path program 1 times [2024-11-14 02:45:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614321721] [2024-11-14 02:45:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:26,455 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 02:45:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:26,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:26,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:26,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:45:26,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:26,609 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 02:45:26,754 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 02:45:26,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:26,754 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614321721] [2024-11-14 02:45:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614321721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26444381] [2024-11-14 02:45:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:26,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:26,756 INFO L87 Difference]: Start difference. First operand 760 states and 846 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:29,539 INFO L93 Difference]: Finished difference Result 760 states and 846 transitions. [2024-11-14 02:45:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:45:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 02:45:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:29,543 INFO L225 Difference]: With dead ends: 760 [2024-11-14 02:45:29,543 INFO L226 Difference]: Without dead ends: 760 [2024-11-14 02:45:29,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:29,544 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 472 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:29,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 942 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-14 02:45:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-14 02:45:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 756. [2024-11-14 02:45:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 425 states have (on average 1.92) internal successors, (816), 750 states have internal predecessors, (816), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 842 transitions. [2024-11-14 02:45:29,568 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 842 transitions. Word has length 27 [2024-11-14 02:45:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:29,569 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 842 transitions. [2024-11-14 02:45:29,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 842 transitions. [2024-11-14 02:45:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:45:29,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:29,570 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] [2024-11-14 02:45:29,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:29,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:29,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:29,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -103996955, now seen corresponding path program 1 times [2024-11-14 02:45:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180234031] [2024-11-14 02:45:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:29,773 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 02:45:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:29,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:29,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:29,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:45:29,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:29,956 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 02:45:30,287 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 02:45:30,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:30,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180234031] [2024-11-14 02:45:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180234031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:30,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050890490] [2024-11-14 02:45:30,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:30,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:30,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:30,290 INFO L87 Difference]: Start difference. First operand 756 states and 842 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:33,489 INFO L93 Difference]: Finished difference Result 804 states and 857 transitions. [2024-11-14 02:45:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:45:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-14 02:45:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:33,495 INFO L225 Difference]: With dead ends: 804 [2024-11-14 02:45:33,495 INFO L226 Difference]: Without dead ends: 804 [2024-11-14 02:45:33,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:33,496 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 196 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:33,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1369 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 02:45:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-14 02:45:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 752. [2024-11-14 02:45:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 425 states have (on average 1.9105882352941177) internal successors, (812), 746 states have internal predecessors, (812), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 838 transitions. [2024-11-14 02:45:33,523 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 838 transitions. Word has length 27 [2024-11-14 02:45:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:33,523 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 838 transitions. [2024-11-14 02:45:33,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 838 transitions. [2024-11-14 02:45:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 02:45:33,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:33,525 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, 1, 1] [2024-11-14 02:45:33,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Forceful destruction successful, exit code 0 [2024-11-14 02:45:33,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:33,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:33,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2130343620, now seen corresponding path program 1 times [2024-11-14 02:45:33,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397383141] [2024-11-14 02:45:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:33,728 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 02:45:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:33,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:33,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:33,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:45:33,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:34,068 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 02:45:34,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:34,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397383141] [2024-11-14 02:45:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397383141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:34,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:45:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21597732] [2024-11-14 02:45:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:34,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:34,074 INFO L87 Difference]: Start difference. First operand 752 states and 838 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:34,173 INFO L93 Difference]: Finished difference Result 746 states and 828 transitions. [2024-11-14 02:45:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:45:34,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-14 02:45:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:34,177 INFO L225 Difference]: With dead ends: 746 [2024-11-14 02:45:34,177 INFO L226 Difference]: Without dead ends: 746 [2024-11-14 02:45:34,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:34,178 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 21 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:34,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2180 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:45:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-14 02:45:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2024-11-14 02:45:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 419 states have (on average 1.9140811455847255) internal successors, (802), 740 states have internal predecessors, (802), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 828 transitions. [2024-11-14 02:45:34,200 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 828 transitions. Word has length 43 [2024-11-14 02:45:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:34,200 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 828 transitions. [2024-11-14 02:45:34,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 828 transitions. [2024-11-14 02:45:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 02:45:34,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:34,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:34,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:34,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:34,403 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:34,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2044141320, now seen corresponding path program 1 times [2024-11-14 02:45:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57228545] [2024-11-14 02:45:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:34,405 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 02:45:34,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:34,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:34,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:34,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:45:34,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:35,173 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 02:45:35,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:35,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:35,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57228545] [2024-11-14 02:45:35,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57228545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:35,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:35,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282442329] [2024-11-14 02:45:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:35,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:45:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:45:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:35,175 INFO L87 Difference]: Start difference. First operand 746 states and 828 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:35,583 INFO L93 Difference]: Finished difference Result 963 states and 1074 transitions. [2024-11-14 02:45:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:45:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-14 02:45:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:35,591 INFO L225 Difference]: With dead ends: 963 [2024-11-14 02:45:35,592 INFO L226 Difference]: Without dead ends: 963 [2024-11-14 02:45:35,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:45:35,593 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 177 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:35,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1510 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:45:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-14 02:45:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 793. [2024-11-14 02:45:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 466 states have (on average 1.8218884120171674) internal successors, (849), 787 states have internal predecessors, (849), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 875 transitions. [2024-11-14 02:45:35,617 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 875 transitions. Word has length 51 [2024-11-14 02:45:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:35,617 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 875 transitions. [2024-11-14 02:45:35,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 875 transitions. [2024-11-14 02:45:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 02:45:35,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:35,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:35,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Ended with exit code 0 [2024-11-14 02:45:35,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:35,824 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:35,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1434711606, now seen corresponding path program 1 times [2024-11-14 02:45:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697595030] [2024-11-14 02:45:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:35,826 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 02:45:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:35,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:35,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:36,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:45:36,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:36,338 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 02:45:36,349 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 02:45:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:45:37,260 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 02:45:37,296 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:45:37,297 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 02:45:37,323 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 02:45:37,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:37,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697595030] [2024-11-14 02:45:37,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697595030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:37,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:37,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:45:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906047358] [2024-11-14 02:45:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:37,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:37,326 INFO L87 Difference]: Start difference. First operand 793 states and 875 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:39,416 INFO L93 Difference]: Finished difference Result 755 states and 837 transitions. [2024-11-14 02:45:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:45:39,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 02:45:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:39,427 INFO L225 Difference]: With dead ends: 755 [2024-11-14 02:45:39,427 INFO L226 Difference]: Without dead ends: 755 [2024-11-14 02:45:39,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:39,432 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 748 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:39,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 574 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 02:45:39,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-14 02:45:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 718. [2024-11-14 02:45:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 429 states have (on average 1.7179487179487178) internal successors, (737), 712 states have internal predecessors, (737), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 763 transitions. [2024-11-14 02:45:39,463 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 763 transitions. Word has length 54 [2024-11-14 02:45:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:39,464 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 763 transitions. [2024-11-14 02:45:39,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 763 transitions. [2024-11-14 02:45:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 02:45:39,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:39,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:39,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:39,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:39,668 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:39,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1138270683, now seen corresponding path program 1 times [2024-11-14 02:45:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029818786] [2024-11-14 02:45:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:39,670 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 02:45:39,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:39,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:40,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:45:40,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:40,079 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 02:45:40,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:45:40,158 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 02:45:40,179 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 02:45:40,179 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:40,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029818786] [2024-11-14 02:45:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029818786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:40,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:45:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487618865] [2024-11-14 02:45:40,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:40,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:45:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:40,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:45:40,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:40,183 INFO L87 Difference]: Start difference. First operand 718 states and 763 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:42,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:42,554 INFO L93 Difference]: Finished difference Result 717 states and 762 transitions. [2024-11-14 02:45:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:45:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-14 02:45:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:42,558 INFO L225 Difference]: With dead ends: 717 [2024-11-14 02:45:42,559 INFO L226 Difference]: Without dead ends: 717 [2024-11-14 02:45:42,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:45:42,559 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 2 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:42,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1839 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 02:45:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-14 02:45:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2024-11-14 02:45:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 429 states have (on average 1.7156177156177157) internal successors, (736), 711 states have internal predecessors, (736), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 762 transitions. [2024-11-14 02:45:42,575 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 762 transitions. Word has length 59 [2024-11-14 02:45:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:42,576 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 762 transitions. [2024-11-14 02:45:42,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 762 transitions. [2024-11-14 02:45:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 02:45:42,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:42,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:42,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Forceful destruction successful, exit code 0 [2024-11-14 02:45:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:42,785 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:42,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1138270684, now seen corresponding path program 1 times [2024-11-14 02:45:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181295335] [2024-11-14 02:45:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:42,786 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 02:45:42,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:42,788 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:42,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:43,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 02:45:43,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:43,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:45:43,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:45:43,163 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 02:45:43,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-14 02:45:43,277 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 02:45:43,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:43,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181295335] [2024-11-14 02:45:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181295335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:43,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:43,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:45:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046938147] [2024-11-14 02:45:43,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:43,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:45:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:45:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:45:43,280 INFO L87 Difference]: Start difference. First operand 717 states and 762 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:46,370 INFO L93 Difference]: Finished difference Result 716 states and 761 transitions. [2024-11-14 02:45:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:45:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-14 02:45:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:46,373 INFO L225 Difference]: With dead ends: 716 [2024-11-14 02:45:46,373 INFO L226 Difference]: Without dead ends: 716 [2024-11-14 02:45:46,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:45:46,373 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 1 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:46,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1862 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 02:45:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-14 02:45:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-14 02:45:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 428 states have (on average 1.7172897196261683) internal successors, (735), 710 states have internal predecessors, (735), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 02:45:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 761 transitions. [2024-11-14 02:45:46,389 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 761 transitions. Word has length 59 [2024-11-14 02:45:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:46,390 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 761 transitions. [2024-11-14 02:45:46,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:45:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 761 transitions. [2024-11-14 02:45:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 02:45:46,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:46,392 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, 1, 1, 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 02:45:46,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Ended with exit code 0 [2024-11-14 02:45:46,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:46,594 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:46,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash 758878050, now seen corresponding path program 1 times [2024-11-14 02:45:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:46,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307743835] [2024-11-14 02:45:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:46,595 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 02:45:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:46,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:46,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:46,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:45:46,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:47,000 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 02:45:47,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:45:47,001 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:47,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307743835] [2024-11-14 02:45:47,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307743835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:47,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:45:47,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:45:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824754283] [2024-11-14 02:45:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:47,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:45:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:45:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:47,005 INFO L87 Difference]: Start difference. First operand 716 states and 761 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 02:45:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:47,049 INFO L93 Difference]: Finished difference Result 719 states and 765 transitions. [2024-11-14 02:45:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:45:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 67 [2024-11-14 02:45:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:47,053 INFO L225 Difference]: With dead ends: 719 [2024-11-14 02:45:47,053 INFO L226 Difference]: Without dead ends: 719 [2024-11-14 02:45:47,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:45:47,054 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 0 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:47,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2125 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:45:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-14 02:45:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2024-11-14 02:45:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 430 states have (on average 1.716279069767442) internal successors, (738), 713 states have internal predecessors, (738), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-14 02:45:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 765 transitions. [2024-11-14 02:45:47,072 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 765 transitions. Word has length 67 [2024-11-14 02:45:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:47,073 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 765 transitions. [2024-11-14 02:45:47,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 02:45:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 765 transitions. [2024-11-14 02:45:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 02:45:47,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:47,074 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, 1, 1, 1, 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 02:45:47,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:47,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:47,275 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:47,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash -904884915, now seen corresponding path program 1 times [2024-11-14 02:45:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482300975] [2024-11-14 02:45:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:47,276 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 02:45:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:47,278 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:47,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:47,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:45:47,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:47,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:47,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:47,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482300975] [2024-11-14 02:45:47,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482300975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:45:47,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [330129019] [2024-11-14 02:45:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:47,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:45:47,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:45:47,866 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:45:47,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-14 02:45:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:48,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:45:48,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:48,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [330129019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:45:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331949446] [2024-11-14 02:45:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:45:48,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:45:48,601 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:45:48,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 02:45:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:48,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:45:48,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:48,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331949446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:45:49,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:45:49,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-14 02:45:49,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739747959] [2024-11-14 02:45:49,006 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:45:49,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:45:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:45:49,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:45:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:45:49,008 INFO L87 Difference]: Start difference. First operand 719 states and 765 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:45:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:49,251 INFO L93 Difference]: Finished difference Result 731 states and 782 transitions. [2024-11-14 02:45:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:45:49,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2024-11-14 02:45:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:49,257 INFO L225 Difference]: With dead ends: 731 [2024-11-14 02:45:49,258 INFO L226 Difference]: Without dead ends: 731 [2024-11-14 02:45:49,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:45:49,259 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 8 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:49,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3536 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:45:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-14 02:45:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2024-11-14 02:45:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 439 states have (on average 1.715261958997722) internal successors, (753), 722 states have internal predecessors, (753), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-14 02:45:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 780 transitions. [2024-11-14 02:45:49,286 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 780 transitions. Word has length 68 [2024-11-14 02:45:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:49,286 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 780 transitions. [2024-11-14 02:45:49,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:45:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 780 transitions. [2024-11-14 02:45:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 02:45:49,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:49,288 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:49,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:49,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-14 02:45:49,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-14 02:45:49,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:45:49,889 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:45:49,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 964768290, now seen corresponding path program 2 times [2024-11-14 02:45:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:45:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510388988] [2024-11-14 02:45:49,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:45:49,891 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 02:45:49,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:45:49,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:49,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:45:50,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:45:50,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:45:50,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:45:50,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:50,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:50,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:45:50,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510388988] [2024-11-14 02:45:50,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510388988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:45:50,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076018105] [2024-11-14 02:45:50,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:45:50,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:45:50,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:45:50,933 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:45:50,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 02:45:52,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:45:52,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:45:52,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:45:52,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:52,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:45:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076018105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:45:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53156553] [2024-11-14 02:45:52,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:45:52,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:45:52,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:45:52,596 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:45:52,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 02:46:03,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:46:03,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:46:03,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:46:03,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:03,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53156553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:03,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:46:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2024-11-14 02:46:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637922381] [2024-11-14 02:46:03,356 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:46:03,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 02:46:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:46:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 02:46:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:46:03,361 INFO L87 Difference]: Start difference. First operand 729 states and 780 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:46:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:04,051 INFO L93 Difference]: Finished difference Result 744 states and 801 transitions. [2024-11-14 02:46:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 02:46:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2024-11-14 02:46:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:04,054 INFO L225 Difference]: With dead ends: 744 [2024-11-14 02:46:04,054 INFO L226 Difference]: Without dead ends: 738 [2024-11-14 02:46:04,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2024-11-14 02:46:04,055 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 14 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:04,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4252 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:46:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-14 02:46:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-14 02:46:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 448 states have (on average 1.7053571428571428) internal successors, (764), 731 states have internal predecessors, (764), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-14 02:46:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 791 transitions. [2024-11-14 02:46:04,071 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 791 transitions. Word has length 71 [2024-11-14 02:46:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:04,071 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 791 transitions. [2024-11-14 02:46:04,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:46:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 791 transitions. [2024-11-14 02:46:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 02:46:04,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:04,072 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:46:04,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 02:46:04,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 02:46:04,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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)] Forceful destruction successful, exit code 0 [2024-11-14 02:46:04,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:46:04,673 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-14 02:46:04,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1005834818, now seen corresponding path program 3 times [2024-11-14 02:46:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:46:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662699595] [2024-11-14 02:46:04,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:46:04,674 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 02:46:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:46:04,677 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:46:04,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/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 02:46:05,343 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 02:46:05,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:46:05,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:46:05,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:05,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:06,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:46:06,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662699595] [2024-11-14 02:46:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662699595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:06,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1749017294] [2024-11-14 02:46:06,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:46:06,515 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:46:06,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:46:06,519 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:46:06,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 02:46:11,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 02:46:11,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:46:11,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:46:11,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:11,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1749017294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:11,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660038604] [2024-11-14 02:46:11,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:46:11,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:46:11,510 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:46:11,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e55eae-f80d-4c62-bd32-08cd0bdf7af3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process