./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:20,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:21,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:05:21,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:21,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:21,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:21,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:21,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:21,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:21,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:21,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:21,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:21,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:21,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:21,064 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:21,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:21,064 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:21,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:21,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:21,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:21,066 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:05:21,072 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:05:21,072 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:05:21,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:21,073 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:05:21,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:21,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:05:21,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:21,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:21,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:21,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:21,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:21,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:21,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:21,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:21,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:21,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:21,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:21,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:21,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:21,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:21,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:21,094 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2024-10-31 22:05:21,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:21,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:21,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:21,461 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:21,462 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:21,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i Unable to find full path for "g++" [2024-10-31 22:05:23,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:23,976 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:23,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-10-31 22:05:24,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/9d5ef36d8/68a518ccf8bd4082b41d2326569e3e1b/FLAG3dfdab15a [2024-10-31 22:05:24,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/9d5ef36d8/68a518ccf8bd4082b41d2326569e3e1b [2024-10-31 22:05:24,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:24,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:24,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:24,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:24,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:24,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:24" (1/1) ... [2024-10-31 22:05:24,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1497753e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:24, skipping insertion in model container [2024-10-31 22:05:24,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:24" (1/1) ... [2024-10-31 22:05:24,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:24,664 WARN L607 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-10-31 22:05:24,665 WARN L607 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-10-31 22:05:24,666 WARN L607 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-10-31 22:05:24,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:24,716 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) [2024-10-31 22:05:24,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8084fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:24, skipping insertion in model container [2024-10-31 22:05:24,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:24,718 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-31 22:05:24,721 INFO L158 Benchmark]: Toolchain (without parser) took 676.72ms. Allocated memory is still 169.9MB. Free memory was 140.8MB in the beginning and 127.0MB in the end (delta: 13.8MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-10-31 22:05:24,722 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 102.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:05:24,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.85ms. Allocated memory is still 169.9MB. Free memory was 140.6MB in the beginning and 127.0MB in the end (delta: 13.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-10-31 22:05:24,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 102.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.85ms. Allocated memory is still 169.9MB. Free memory was 140.6MB in the beginning and 127.0MB in the end (delta: 13.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:27,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:27,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-31 22:05:27,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:27,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:27,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:27,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:27,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:27,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:27,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:27,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:27,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:27,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:27,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:27,580 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:27,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:27,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:27,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:27,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:27,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:27,583 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:05:27,585 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:05:27,585 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:05:27,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:27,586 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:05:27,586 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:05:27,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:27,587 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:05:27,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:05:27,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:27,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:27,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:27,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:27,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:27,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:27,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:27,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:27,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:27,592 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:05:27,592 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:05:27,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:27,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:27,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:27,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:27,597 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:05:27,598 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2024-10-31 22:05:27,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:28,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:28,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:28,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:28,034 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:28,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i Unable to find full path for "g++" [2024-10-31 22:05:30,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:30,539 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:30,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-10-31 22:05:30,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/ea6c13887/cdc7528dccab410cb42379c56018012c/FLAG783734329 [2024-10-31 22:05:30,585 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/data/ea6c13887/cdc7528dccab410cb42379c56018012c [2024-10-31 22:05:30,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:30,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:30,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:30,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:30,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:30,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:30" (1/1) ... [2024-10-31 22:05:30,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:30, skipping insertion in model container [2024-10-31 22:05:30,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:30" (1/1) ... [2024-10-31 22:05:30,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:31,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:31,252 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-31 22:05:31,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:31,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:31,337 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:31,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:31,470 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:31,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31 WrapperNode [2024-10-31 22:05:31,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:31,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:31,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:31,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:31,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,532 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 123 [2024-10-31 22:05:31,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:31,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:31,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:31,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:31,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,599 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2024-10-31 22:05:31,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:31,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:31,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:31,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:31,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:31,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:31,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-31 22:05:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-31 22:05:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:05:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:05:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2024-10-31 22:05:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2024-10-31 22:05:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:05:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-31 22:05:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-31 22:05:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:05:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:05:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:05:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-31 22:05:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2024-10-31 22:05:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2024-10-31 22:05:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-10-31 22:05:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-10-31 22:05:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:05:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:05:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:05:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-10-31 22:05:31,742 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-10-31 22:05:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:31,939 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:31,943 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:32,949 INFO L? ?]: Removed 170 outVars from TransFormulas that were not future-live. [2024-10-31 22:05:32,949 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:32,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:32,971 INFO L316 CfgBuilder]: Removed 41 assume(true) statements. [2024-10-31 22:05:32,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:32 BoogieIcfgContainer [2024-10-31 22:05:32,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:32,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:32,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:32,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:32,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:30" (1/3) ... [2024-10-31 22:05:32,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268e7486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:32, skipping insertion in model container [2024-10-31 22:05:32,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (2/3) ... [2024-10-31 22:05:32,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268e7486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:32, skipping insertion in model container [2024-10-31 22:05:32,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:32" (3/3) ... [2024-10-31 22:05:32,986 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2024-10-31 22:05:33,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:33,007 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2024-10-31 22:05:33,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:33,074 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@184bd295, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:33,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-10-31 22:05:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 121 states have (on average 2.1322314049586777) internal successors, (258), 210 states have internal predecessors, (258), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-31 22:05:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 22:05:33,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:33,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:05:33,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:33,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash 386559167, now seen corresponding path program 1 times [2024-10-31 22:05:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:33,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386178309] [2024-10-31 22:05:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,109 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 [2024-10-31 22:05:33,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:33,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:33,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:05:33,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:33,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:33,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:33,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386178309] [2024-10-31 22:05:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386178309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:33,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543620018] [2024-10-31 22:05:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:05:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:05:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:05:33,280 INFO L87 Difference]: Start difference. First operand has 220 states, 121 states have (on average 2.1322314049586777) internal successors, (258), 210 states have internal predecessors, (258), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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) [2024-10-31 22:05:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:33,324 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2024-10-31 22:05:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:05:33,328 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 [2024-10-31 22:05:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:33,340 INFO L225 Difference]: With dead ends: 215 [2024-10-31 22:05:33,340 INFO L226 Difference]: Without dead ends: 213 [2024-10-31 22:05:33,342 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 [2024-10-31 22:05:33,346 INFO L432 NwaCegarLoop]: 237 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, 237 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 [2024-10-31 22:05:33,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-31 22:05:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-31 22:05:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 118 states have (on average 1.7627118644067796) internal successors, (208), 202 states have internal predecessors, (208), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:05:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 235 transitions. [2024-10-31 22:05:33,419 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 235 transitions. Word has length 5 [2024-10-31 22:05:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:33,422 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 235 transitions. [2024-10-31 22:05:33,423 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) [2024-10-31 22:05:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 235 transitions. [2024-10-31 22:05:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 22:05:33,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:33,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:05:33,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:33,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:33,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:33,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 386559229, now seen corresponding path program 1 times [2024-10-31 22:05:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998998169] [2024-10-31 22:05:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,627 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 [2024-10-31 22:05:33,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:33,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:33,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:05:33,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:33,796 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 [2024-10-31 22:05:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:33,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:33,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:33,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998998169] [2024-10-31 22:05:33,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998998169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:33,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:33,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589496337] [2024-10-31 22:05:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:33,822 INFO L87 Difference]: Start difference. First operand 213 states and 235 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) [2024-10-31 22:05:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:34,124 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2024-10-31 22:05:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:34,125 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 [2024-10-31 22:05:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:34,128 INFO L225 Difference]: With dead ends: 210 [2024-10-31 22:05:34,128 INFO L226 Difference]: Without dead ends: 210 [2024-10-31 22:05:34,128 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 [2024-10-31 22:05:34,129 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 4 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:34,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 380 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-10-31 22:05:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-10-31 22:05:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 118 states have (on average 1.7372881355932204) internal successors, (205), 199 states have internal predecessors, (205), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:05:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2024-10-31 22:05:34,150 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 5 [2024-10-31 22:05:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:34,151 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2024-10-31 22:05:34,151 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) [2024-10-31 22:05:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2024-10-31 22:05:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 22:05:34,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:34,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:05:34,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:34,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:34,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:34,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 386559230, now seen corresponding path program 1 times [2024-10-31 22:05:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:34,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703161029] [2024-10-31 22:05:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:34,362 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 [2024-10-31 22:05:34,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:34,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:34,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:34,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:34,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:34,470 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 [2024-10-31 22:05:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:34,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:34,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703161029] [2024-10-31 22:05:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703161029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:34,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27910948] [2024-10-31 22:05:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:34,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:34,499 INFO L87 Difference]: Start difference. First operand 210 states and 232 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) [2024-10-31 22:05:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:34,852 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2024-10-31 22:05:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:34,853 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 [2024-10-31 22:05:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:34,855 INFO L225 Difference]: With dead ends: 207 [2024-10-31 22:05:34,855 INFO L226 Difference]: Without dead ends: 207 [2024-10-31 22:05:34,855 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 [2024-10-31 22:05:34,857 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 4 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:34,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 384 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-31 22:05:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-10-31 22:05:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 118 states have (on average 1.7118644067796611) internal successors, (202), 196 states have internal predecessors, (202), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:05:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2024-10-31 22:05:34,870 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 5 [2024-10-31 22:05:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:34,870 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2024-10-31 22:05:34,870 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) [2024-10-31 22:05:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2024-10-31 22:05:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:05:34,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:34,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:34,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:35,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:35,074 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:35,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1179187411, now seen corresponding path program 1 times [2024-10-31 22:05:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851072641] [2024-10-31 22:05:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,076 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 [2024-10-31 22:05:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:35,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:35,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:05:35,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:35,313 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-31 22:05:35,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-31 22:05:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:35,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:35,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851072641] [2024-10-31 22:05:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851072641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096412016] [2024-10-31 22:05:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:35,413 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:36,113 INFO L93 Difference]: Finished difference Result 244 states and 265 transitions. [2024-10-31 22:05:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:36,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 22:05:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:36,115 INFO L225 Difference]: With dead ends: 244 [2024-10-31 22:05:36,116 INFO L226 Difference]: Without dead ends: 244 [2024-10-31 22:05:36,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:36,118 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 256 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:36,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 406 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:05:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-10-31 22:05:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 221. [2024-10-31 22:05:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 209 states have internal predecessors, (229), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:05:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 256 transitions. [2024-10-31 22:05:36,142 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 256 transitions. Word has length 8 [2024-10-31 22:05:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:36,143 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 256 transitions. [2024-10-31 22:05:36,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 256 transitions. [2024-10-31 22:05:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:05:36,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:36,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:36,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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)] Ended with exit code 0 [2024-10-31 22:05:36,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:36,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:36,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1179187412, now seen corresponding path program 1 times [2024-10-31 22:05:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527179078] [2024-10-31 22:05:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:36,347 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 [2024-10-31 22:05:36,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:36,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:36,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:36,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:05:36,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:36,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:36,609 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 [2024-10-31 22:05:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:36,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:36,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527179078] [2024-10-31 22:05:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527179078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:36,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:36,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:36,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082341349] [2024-10-31 22:05:36,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:36,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:36,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:36,748 INFO L87 Difference]: Start difference. First operand 221 states and 256 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:37,678 INFO L93 Difference]: Finished difference Result 225 states and 249 transitions. [2024-10-31 22:05:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:37,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 22:05:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:37,681 INFO L225 Difference]: With dead ends: 225 [2024-10-31 22:05:37,681 INFO L226 Difference]: Without dead ends: 225 [2024-10-31 22:05:37,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:37,682 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 463 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:37,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 317 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:05:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-31 22:05:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2024-10-31 22:05:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 128 states have (on average 1.6796875) internal successors, (215), 201 states have internal predecessors, (215), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:05:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 242 transitions. [2024-10-31 22:05:37,692 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 242 transitions. Word has length 8 [2024-10-31 22:05:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:37,692 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 242 transitions. [2024-10-31 22:05:37,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 242 transitions. [2024-10-31 22:05:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:05:37,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:37,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:37,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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)] Ended with exit code 0 [2024-10-31 22:05:37,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:37,894 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:37,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash -672253644, now seen corresponding path program 1 times [2024-10-31 22:05:37,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293656557] [2024-10-31 22:05:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:37,895 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 [2024-10-31 22:05:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:37,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:37,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:38,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 22:05:38,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:38,136 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-10-31 22:05:38,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-10-31 22:05:38,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:05:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:38,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:38,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293656557] [2024-10-31 22:05:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293656557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:38,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:05:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445971142] [2024-10-31 22:05:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:38,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:05:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:05:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:38,331 INFO L87 Difference]: Start difference. First operand 213 states and 242 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:39,418 INFO L93 Difference]: Finished difference Result 225 states and 255 transitions. [2024-10-31 22:05:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:05:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-31 22:05:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:39,421 INFO L225 Difference]: With dead ends: 225 [2024-10-31 22:05:39,422 INFO L226 Difference]: Without dead ends: 225 [2024-10-31 22:05:39,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:05:39,423 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 13 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:39,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1207 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:05:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-31 22:05:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2024-10-31 22:05:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 135 states have (on average 1.651851851851852) internal successors, (223), 208 states have internal predecessors, (223), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2024-10-31 22:05:39,433 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 10 [2024-10-31 22:05:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:39,433 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2024-10-31 22:05:39,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2024-10-31 22:05:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:05:39,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:39,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:39,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:39,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:39,638 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:39,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -672253643, now seen corresponding path program 1 times [2024-10-31 22:05:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862239916] [2024-10-31 22:05:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:39,640 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 [2024-10-31 22:05:39,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:39,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:39,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:39,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-31 22:05:39,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:39,911 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-31 22:05:39,912 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 [2024-10-31 22:05:39,925 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 [2024-10-31 22:05:40,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:05:40,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:05:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:40,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:40,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862239916] [2024-10-31 22:05:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862239916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:40,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:40,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:05:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705105416] [2024-10-31 22:05:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:40,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:05:40,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:05:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:40,243 INFO L87 Difference]: Start difference. First operand 221 states and 252 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:41,229 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2024-10-31 22:05:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:41,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-31 22:05:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:41,232 INFO L225 Difference]: With dead ends: 227 [2024-10-31 22:05:41,232 INFO L226 Difference]: Without dead ends: 227 [2024-10-31 22:05:41,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:05:41,233 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 26 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:41,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 977 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:05:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-31 22:05:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2024-10-31 22:05:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 135 states have (on average 1.6444444444444444) internal successors, (222), 208 states have internal predecessors, (222), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 251 transitions. [2024-10-31 22:05:41,245 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 251 transitions. Word has length 10 [2024-10-31 22:05:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:41,245 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 251 transitions. [2024-10-31 22:05:41,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2024-10-31 22:05:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:05:41,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:41,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:41,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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)] Ended with exit code 0 [2024-10-31 22:05:41,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:41,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:41,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 634973849, now seen corresponding path program 1 times [2024-10-31 22:05:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414414155] [2024-10-31 22:05:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:41,449 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 [2024-10-31 22:05:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:41,450 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:41,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:41,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:05:41,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:41,561 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 [2024-10-31 22:05:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:41,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:41,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:41,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414414155] [2024-10-31 22:05:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414414155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493593732] [2024-10-31 22:05:41,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:41,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:41,615 INFO L87 Difference]: Start difference. First operand 221 states and 251 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:42,170 INFO L93 Difference]: Finished difference Result 226 states and 248 transitions. [2024-10-31 22:05:42,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-31 22:05:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:42,172 INFO L225 Difference]: With dead ends: 226 [2024-10-31 22:05:42,172 INFO L226 Difference]: Without dead ends: 226 [2024-10-31 22:05:42,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:42,173 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 27 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:42,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 804 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:05:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-31 22:05:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2024-10-31 22:05:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.6222222222222222) internal successors, (219), 207 states have internal predecessors, (219), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2024-10-31 22:05:42,180 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 11 [2024-10-31 22:05:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:42,181 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2024-10-31 22:05:42,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2024-10-31 22:05:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:05:42,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:42,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:42,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-31 22:05:42,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:42,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:42,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 634973850, now seen corresponding path program 1 times [2024-10-31 22:05:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040904392] [2024-10-31 22:05:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:42,384 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 [2024-10-31 22:05:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:42,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:42,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:42,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:05:42,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:42,515 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 [2024-10-31 22:05:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:42,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:42,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040904392] [2024-10-31 22:05:42,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040904392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:42,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:42,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705282088] [2024-10-31 22:05:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:42,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:42,623 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:43,368 INFO L93 Difference]: Finished difference Result 224 states and 246 transitions. [2024-10-31 22:05:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-31 22:05:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:43,371 INFO L225 Difference]: With dead ends: 224 [2024-10-31 22:05:43,371 INFO L226 Difference]: Without dead ends: 224 [2024-10-31 22:05:43,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:43,373 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 22 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:43,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 829 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:05:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-31 22:05:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2024-10-31 22:05:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.6074074074074074) internal successors, (217), 207 states have internal predecessors, (217), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 246 transitions. [2024-10-31 22:05:43,381 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 246 transitions. Word has length 11 [2024-10-31 22:05:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:43,382 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 246 transitions. [2024-10-31 22:05:43,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 246 transitions. [2024-10-31 22:05:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-31 22:05:43,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:43,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:43,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:43,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:43,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:43,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash 324523612, now seen corresponding path program 1 times [2024-10-31 22:05:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859963865] [2024-10-31 22:05:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:43,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:05:43,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:43,590 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:43,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:43,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:43,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:43,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:43,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:43,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859963865] [2024-10-31 22:05:43,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859963865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:43,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:43,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:43,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577989931] [2024-10-31 22:05:43,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:43,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:43,736 INFO L87 Difference]: Start difference. First operand 220 states and 246 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:44,018 INFO L93 Difference]: Finished difference Result 219 states and 244 transitions. [2024-10-31 22:05:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:44,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-31 22:05:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:44,020 INFO L225 Difference]: With dead ends: 219 [2024-10-31 22:05:44,020 INFO L226 Difference]: Without dead ends: 219 [2024-10-31 22:05:44,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:44,021 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 5 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:44,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 518 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:05:44,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-31 22:05:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-31 22:05:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 135 states have (on average 1.5925925925925926) internal successors, (215), 206 states have internal predecessors, (215), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 244 transitions. [2024-10-31 22:05:44,028 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 244 transitions. Word has length 13 [2024-10-31 22:05:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:44,029 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 244 transitions. [2024-10-31 22:05:44,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 244 transitions. [2024-10-31 22:05:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-31 22:05:44,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:44,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:44,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:44,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:44,231 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:44,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash 324523613, now seen corresponding path program 1 times [2024-10-31 22:05:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535512585] [2024-10-31 22:05:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:44,232 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 [2024-10-31 22:05:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:44,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:44,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:05:44,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:44,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:44,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535512585] [2024-10-31 22:05:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535512585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:44,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643060316] [2024-10-31 22:05:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:44,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:44,463 INFO L87 Difference]: Start difference. First operand 219 states and 244 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:45,105 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2024-10-31 22:05:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:45,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-31 22:05:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:45,107 INFO L225 Difference]: With dead ends: 221 [2024-10-31 22:05:45,107 INFO L226 Difference]: Without dead ends: 221 [2024-10-31 22:05:45,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:05:45,108 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 240 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:45,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 905 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:05:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-31 22:05:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2024-10-31 22:05:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 135 states have (on average 1.5851851851851853) internal successors, (214), 206 states have internal predecessors, (214), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 243 transitions. [2024-10-31 22:05:45,116 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 243 transitions. Word has length 13 [2024-10-31 22:05:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:45,117 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 243 transitions. [2024-10-31 22:05:45,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 243 transitions. [2024-10-31 22:05:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-31 22:05:45,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:45,118 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] [2024-10-31 22:05:45,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:45,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:45,319 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:45,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:45,319 INFO L85 PathProgramCache]: Analyzing trace with hash -660244487, now seen corresponding path program 1 times [2024-10-31 22:05:45,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:45,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48883890] [2024-10-31 22:05:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:45,320 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 [2024-10-31 22:05:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:45,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:45,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:45,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:05:45,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:45,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:45,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48883890] [2024-10-31 22:05:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48883890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509330651] [2024-10-31 22:05:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:45,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:45,570 INFO L87 Difference]: Start difference. First operand 219 states and 243 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:46,385 INFO L93 Difference]: Finished difference Result 214 states and 238 transitions. [2024-10-31 22:05:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:46,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-10-31 22:05:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:46,387 INFO L225 Difference]: With dead ends: 214 [2024-10-31 22:05:46,387 INFO L226 Difference]: Without dead ends: 214 [2024-10-31 22:05:46,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:05:46,388 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 364 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:46,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 445 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:05:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-10-31 22:05:46,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-10-31 22:05:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.548148148148148) internal successors, (209), 201 states have internal predecessors, (209), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2024-10-31 22:05:46,396 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 28 [2024-10-31 22:05:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:46,398 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2024-10-31 22:05:46,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2024-10-31 22:05:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-31 22:05:46,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:46,399 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] [2024-10-31 22:05:46,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-31 22:05:46,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:46,600 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:46,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -660244486, now seen corresponding path program 1 times [2024-10-31 22:05:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563703360] [2024-10-31 22:05:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:46,601 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 [2024-10-31 22:05:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:46,602 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:46,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:46,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:05:46,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:47,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:47,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563703360] [2024-10-31 22:05:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563703360] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011658801] [2024-10-31 22:05:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:47,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:05:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:05:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:47,090 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:48,425 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2024-10-31 22:05:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:48,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-10-31 22:05:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:48,429 INFO L225 Difference]: With dead ends: 213 [2024-10-31 22:05:48,429 INFO L226 Difference]: Without dead ends: 213 [2024-10-31 22:05:48,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:05:48,430 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 304 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:48,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 500 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:05:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-31 22:05:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-31 22:05:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 135 states have (on average 1.5407407407407407) internal successors, (208), 200 states have internal predecessors, (208), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 237 transitions. [2024-10-31 22:05:48,454 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 237 transitions. Word has length 28 [2024-10-31 22:05:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:48,455 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 237 transitions. [2024-10-31 22:05:48,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 237 transitions. [2024-10-31 22:05:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:05:48,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:48,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:48,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:48,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:48,658 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1172093802, now seen corresponding path program 1 times [2024-10-31 22:05:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331147263] [2024-10-31 22:05:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:48,662 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 [2024-10-31 22:05:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:48,665 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:48,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:48,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:48,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:48,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:48,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331147263] [2024-10-31 22:05:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331147263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387265082] [2024-10-31 22:05:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:48,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:05:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:48,951 INFO L87 Difference]: Start difference. First operand 213 states and 237 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:49,145 INFO L93 Difference]: Finished difference Result 212 states and 235 transitions. [2024-10-31 22:05:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-10-31 22:05:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:49,146 INFO L225 Difference]: With dead ends: 212 [2024-10-31 22:05:49,146 INFO L226 Difference]: Without dead ends: 212 [2024-10-31 22:05:49,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:49,147 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 280 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:49,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 453 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:05:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-31 22:05:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-31 22:05:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 199 states have internal predecessors, (207), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:05:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 235 transitions. [2024-10-31 22:05:49,155 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 235 transitions. Word has length 30 [2024-10-31 22:05:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:49,156 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 235 transitions. [2024-10-31 22:05:49,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:05:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 235 transitions. [2024-10-31 22:05:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:05:49,157 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:49,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:49,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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)] Ended with exit code 0 [2024-10-31 22:05:49,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:49,361 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-10-31 22:05:49,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1907727632, now seen corresponding path program 1 times [2024-10-31 22:05:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:05:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767081434] [2024-10-31 22:05:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:49,362 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 [2024-10-31 22:05:49,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:05:49,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:05:49,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:05:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:49,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-31 22:05:49,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:49,715 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-31 22:05:49,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-31 22:05:50,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:05:50,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:05:50,535 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-31 22:05:50,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-10-31 22:05:50,817 INFO L349 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2024-10-31 22:05:50,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 67 [2024-10-31 22:05:51,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-10-31 22:05:51,464 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 35 treesize of output 19 [2024-10-31 22:05:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:51,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:52,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:05:52,463 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-10-31 22:05:52,469 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-31 22:05:52,472 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 44 treesize of output 36 [2024-10-31 22:05:52,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-31 22:05:52,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:05:52,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767081434] [2024-10-31 22:05:52,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767081434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:52,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [766830696] [2024-10-31 22:05:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:52,819 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 22:05:52,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/cvc4 [2024-10-31 22:05:52,822 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 22:05:52,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cd13df-ce07-4b57-87d2-f68b19e8e620/bin/uautomizer-verify-4GaUIPS5ZU/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-10-31 22:05:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-31 22:05:53,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:53,469 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-31 22:05:53,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-31 22:05:54,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:05:54,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:05:55,013 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-31 22:05:55,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-10-31 22:05:55,476 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-10-31 22:05:55,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-10-31 22:05:55,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-10-31 22:05:56,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-31 22:05:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:56,318 INFO L311 TraceCheckSpWp]: Computing backward predicates...