./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:47:32,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:47:32,366 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 05:47:32,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:47:32,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:47:32,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:47:32,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:47:32,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:47:32,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:47:32,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:47:32,432 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:47:32,433 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:47:32,448 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:47:32,453 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:47:32,453 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:47:32,454 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:47:32,454 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:47:32,454 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:47:32,455 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:47:32,455 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:47:32,456 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:47:32,460 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:47:32,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:47:32,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:47:32,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:47:32,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:47:32,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:47:32,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:47:32,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:47:32,464 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:47:32,464 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:47:32,464 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:47:32,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:47:32,465 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:47:32,465 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:47:32,465 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:47:32,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:47:32,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:47:32,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:47:32,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:47:32,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:47:32,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:47:32,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:47:32,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:47:32,470 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:47:32,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:47:32,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:47:32,471 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:47:32,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:47:32,472 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2024-11-09 05:47:32,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:47:32,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:47:32,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:47:32,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:47:32,962 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:47:32,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i Unable to find full path for "g++" [2024-11-09 05:47:35,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:47:35,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:47:35,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2024-11-09 05:47:35,953 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/3c64604f0/bd83d83de3a5488c81041e8fadfa7b8d/FLAGc6e3e7151 [2024-11-09 05:47:35,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/3c64604f0/bd83d83de3a5488c81041e8fadfa7b8d [2024-11-09 05:47:35,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:47:36,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:47:36,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:47:36,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:47:36,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:47:36,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:47:35" (1/1) ... [2024-11-09 05:47:36,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412f6a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:36, skipping insertion in model container [2024-11-09 05:47:36,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:47:35" (1/1) ... [2024-11-09 05:47:36,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:47:36,666 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:36,786 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:36,800 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:36,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:47:36,844 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-09 05:47:36,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30a7754d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:36, skipping insertion in model container [2024-11-09 05:47:36,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:47:36,846 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 05:47:36,850 INFO L158 Benchmark]: Toolchain (without parser) took 847.35ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 61.1MB in the beginning and 115.3MB in the end (delta: -54.2MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-11-09 05:47:36,851 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:47:36,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 842.99ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 115.8MB in the end (delta: -54.9MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-11-09 05:47:36,856 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 842.99ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 60.9MB in the beginning and 115.8MB in the end (delta: -54.9MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:47:39,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:47:40,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 05:47:40,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:47:40,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:47:40,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:47:40,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:47:40,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:47:40,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:47:40,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:47:40,090 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:47:40,090 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:47:40,091 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:47:40,091 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:47:40,092 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:47:40,092 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:47:40,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 05:47:40,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 05:47:40,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:47:40,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:47:40,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:47:40,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:47:40,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:47:40,105 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 05:47:40,105 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 05:47:40,106 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 05:47:40,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:47:40,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:47:40,107 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:47:40,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:47:40,108 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:47:40,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:47:40,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:47:40,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:47:40,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:47:40,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:47:40,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:47:40,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:47:40,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:47:40,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:47:40,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:47:40,117 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:47:40,118 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:47:40,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:47:40,128 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:47:40,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2024-11-09 05:47:40,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:47:40,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:47:40,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:47:40,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:47:40,691 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:47:40,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i Unable to find full path for "g++" [2024-11-09 05:47:43,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:47:44,101 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:47:44,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2024-11-09 05:47:44,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/855088ef1/2e30f59b48b1478ab4dd29285f006fca/FLAGe21d5db0c [2024-11-09 05:47:44,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/data/855088ef1/2e30f59b48b1478ab4dd29285f006fca [2024-11-09 05:47:44,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:47:44,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:47:44,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:47:44,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:47:44,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:47:44,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:47:44" (1/1) ... [2024-11-09 05:47:44,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271ed738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:44, skipping insertion in model container [2024-11-09 05:47:44,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:47:44" (1/1) ... [2024-11-09 05:47:44,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:47:44,864 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:44,970 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:44,983 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:44,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:47:45,038 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 05:47:45,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:47:45,124 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:45,167 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:45,179 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 05:47:45,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:47:45,192 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:47:45,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:47:45,396 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:47:45,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45 WrapperNode [2024-11-09 05:47:45,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:47:45,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:47:45,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:47:45,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:47:45,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,509 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 80 [2024-11-09 05:47:45,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:47:45,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:47:45,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:47:45,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:47:45,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:47:45,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:47:45,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:47:45,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:47:45,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (1/1) ... [2024-11-09 05:47:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:47:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:45,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:47:45,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:47:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 05:47:45,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 05:47:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:47:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:47:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:47:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:47:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:47:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:47:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:47:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:47:45,881 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:47:45,884 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:47:46,326 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-09 05:47:46,326 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:47:46,343 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:47:46,344 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:47:46,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:47:46 BoogieIcfgContainer [2024-11-09 05:47:46,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:47:46,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:47:46,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:47:46,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:47:46,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:47:44" (1/3) ... [2024-11-09 05:47:46,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef58d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:47:46, skipping insertion in model container [2024-11-09 05:47:46,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:47:45" (2/3) ... [2024-11-09 05:47:46,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef58d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:47:46, skipping insertion in model container [2024-11-09 05:47:46,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:47:46" (3/3) ... [2024-11-09 05:47:46,365 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2024-11-09 05:47:46,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:47:46,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-09 05:47:46,448 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:47:46,457 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1827db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:47:46,458 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-09 05:47:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 40 states have (on average 1.7) internal successors, (68), 57 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:47:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:47:46,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:46,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:46,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:46,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:46,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1874434535, now seen corresponding path program 1 times [2024-11-09 05:47:46,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:46,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119555603] [2024-11-09 05:47:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:46,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:46,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 05:47:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:46,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:47:46,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:46,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:46,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:46,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119555603] [2024-11-09 05:47:46,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119555603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:46,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:47:46,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:47:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840592994] [2024-11-09 05:47:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:46,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:47:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:47:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:46,875 INFO L87 Difference]: Start difference. First operand has 61 states, 40 states have (on average 1.7) internal successors, (68), 57 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:47,015 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2024-11-09 05:47:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:47:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-09 05:47:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:47,031 INFO L225 Difference]: With dead ends: 98 [2024-11-09 05:47:47,031 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 05:47:47,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:47,038 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 39 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:47,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 253 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:47:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 05:47:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2024-11-09 05:47:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 58 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:47:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-11-09 05:47:47,152 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 11 [2024-11-09 05:47:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:47,153 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-11-09 05:47:47,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-11-09 05:47:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:47:47,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:47,157 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:47,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 05:47:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:47,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:47,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1533029080, now seen corresponding path program 1 times [2024-11-09 05:47:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:47,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284759590] [2024-11-09 05:47:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:47,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:47,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:47,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:47,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 05:47:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:47,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:47:47,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:47,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:47,555 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284759590] [2024-11-09 05:47:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284759590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:47,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:47:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:47:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080415401] [2024-11-09 05:47:47,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:47,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:47:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:47:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:47:47,565 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:47,844 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2024-11-09 05:47:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:47:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-09 05:47:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:47,848 INFO L225 Difference]: With dead ends: 108 [2024-11-09 05:47:47,848 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 05:47:47,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:47:47,851 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 50 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:47,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 254 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:47:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 05:47:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2024-11-09 05:47:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.6065573770491803) internal successors, (98), 77 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:47:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2024-11-09 05:47:47,868 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 11 [2024-11-09 05:47:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:47,869 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2024-11-09 05:47:47,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2024-11-09 05:47:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:47:47,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:47,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:47,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 05:47:48,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:48,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:48,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2022102130, now seen corresponding path program 1 times [2024-11-09 05:47:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83299041] [2024-11-09 05:47:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:48,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:48,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:48,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:48,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 05:47:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:48,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:48,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:48,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:47:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:48,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:48,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83299041] [2024-11-09 05:47:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83299041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:48,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:47:48,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:47:48,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347194007] [2024-11-09 05:47:48,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:48,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:47:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:47:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:48,301 INFO L87 Difference]: Start difference. First operand 83 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:48,542 INFO L93 Difference]: Finished difference Result 97 states and 131 transitions. [2024-11-09 05:47:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:47:48,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:47:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:48,545 INFO L225 Difference]: With dead ends: 97 [2024-11-09 05:47:48,545 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 05:47:48,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:48,547 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:48,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 189 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:47:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 05:47:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2024-11-09 05:47:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.609375) internal successors, (103), 80 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:47:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2024-11-09 05:47:48,562 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 12 [2024-11-09 05:47:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:48,562 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2024-11-09 05:47:48,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2024-11-09 05:47:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:47:48,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:48,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:48,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 05:47:48,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:48,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:48,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2022102129, now seen corresponding path program 1 times [2024-11-09 05:47:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516939031] [2024-11-09 05:47:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:48,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:48,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 05:47:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:48,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:47:48,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:49,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:47:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:49,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:49,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516939031] [2024-11-09 05:47:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516939031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:49,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:47:49,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:47:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169361553] [2024-11-09 05:47:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:49,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:47:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:47:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:47:49,267 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:49,780 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2024-11-09 05:47:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:47:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:47:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:49,785 INFO L225 Difference]: With dead ends: 95 [2024-11-09 05:47:49,785 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 05:47:49,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:47:49,793 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 65 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:49,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 290 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:47:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 05:47:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2024-11-09 05:47:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 83 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:47:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-11-09 05:47:49,821 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 12 [2024-11-09 05:47:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:49,825 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-11-09 05:47:49,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-11-09 05:47:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:47:49,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:49,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:49,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:47:50,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:50,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:50,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash -279291795, now seen corresponding path program 1 times [2024-11-09 05:47:50,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:50,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112125895] [2024-11-09 05:47:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:50,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:50,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 05:47:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:50,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:47:50,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:50,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:50,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:50,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112125895] [2024-11-09 05:47:50,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112125895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:50,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:47:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:47:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393044684] [2024-11-09 05:47:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:50,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:47:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:47:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:50,215 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:50,276 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2024-11-09 05:47:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:47:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:47:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:50,279 INFO L225 Difference]: With dead ends: 65 [2024-11-09 05:47:50,280 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 05:47:50,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:47:50,285 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:50,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:47:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 05:47:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 05:47:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:47:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-09 05:47:50,301 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 12 [2024-11-09 05:47:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:50,301 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-09 05:47:50,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-09 05:47:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:47:50,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:50,306 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:50,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:47:50,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:50,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:50,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2000969273, now seen corresponding path program 1 times [2024-11-09 05:47:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628879284] [2024-11-09 05:47:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:50,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:50,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:50,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:50,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 05:47:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:50,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:47:50,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:50,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:47:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:50,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:52,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628879284] [2024-11-09 05:47:52,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628879284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [264164580] [2024-11-09 05:47:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:47:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:47:52,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:47:52,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 05:47:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:52,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:47:52,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:52,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:47:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:52,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [264164580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519848298] [2024-11-09 05:47:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:52,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:52,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:52,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:47:52,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:47:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:53,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:47:53,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:53,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:47:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:53,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:53,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519848298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:53,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:47:53,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-09 05:47:53,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892908556] [2024-11-09 05:47:53,719 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:47:53,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:47:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:47:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:47:53,722 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:47:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:55,607 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2024-11-09 05:47:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:47:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-09 05:47:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:55,612 INFO L225 Difference]: With dead ends: 82 [2024-11-09 05:47:55,613 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 05:47:55,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:47:55,615 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:55,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 542 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:47:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 05:47:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2024-11-09 05:47:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 71 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:47:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-11-09 05:47:55,634 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 16 [2024-11-09 05:47:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:55,635 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-11-09 05:47:55,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:47:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-11-09 05:47:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:47:55,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:55,637 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:55,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-09 05:47:55,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:47:56,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:47:56,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:56,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:56,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1504205407, now seen corresponding path program 1 times [2024-11-09 05:47:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766216666] [2024-11-09 05:47:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:56,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:56,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:56,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-09 05:47:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:56,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:56,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:56,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:56,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766216666] [2024-11-09 05:47:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766216666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [631259797] [2024-11-09 05:47:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:56,745 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:47:56,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:47:56,750 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:47:56,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-09 05:47:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:56,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:56,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:57,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [631259797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804454068] [2024-11-09 05:47:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:57,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:47:57,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:47:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:57,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:47:57,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:57,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:47:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:47:57,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:57,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804454068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:47:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6, 6] total 14 [2024-11-09 05:47:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424158372] [2024-11-09 05:47:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:57,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:47:57,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:47:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:47:57,430 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:57,693 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2024-11-09 05:47:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:47:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-09 05:47:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:57,697 INFO L225 Difference]: With dead ends: 84 [2024-11-09 05:47:57,697 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 05:47:57,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:47:57,699 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 12 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:57,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 213 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:47:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 05:47:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-09 05:47:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 78 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:47:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2024-11-09 05:47:57,717 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 25 [2024-11-09 05:47:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:57,717 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2024-11-09 05:47:57,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2024-11-09 05:47:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:47:57,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:57,719 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:57,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-09 05:47:57,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:47:58,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:47:58,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:58,324 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:47:58,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:47:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1504205406, now seen corresponding path program 1 times [2024-11-09 05:47:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:47:58,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579669435] [2024-11-09 05:47:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:58,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:47:58,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:47:58,327 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:47:58,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-09 05:47:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:58,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:58,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:58,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:58,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:47:58,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579669435] [2024-11-09 05:47:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579669435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1193522438] [2024-11-09 05:47:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:58,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:47:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:47:58,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:47:58,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-09 05:47:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:58,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:58,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:59,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:47:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:47:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1193522438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:47:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443180906] [2024-11-09 05:47:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:47:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:47:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:47:59,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:47:59,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 05:47:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:47:59,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:47:59,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:47:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:47:59,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:47:59,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443180906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:47:59,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:47:59,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 6, 6] total 11 [2024-11-09 05:47:59,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906881581] [2024-11-09 05:47:59,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:47:59,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:47:59,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:47:59,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:47:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:47:59,301 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:47:59,430 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2024-11-09 05:47:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:47:59,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-09 05:47:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:47:59,433 INFO L225 Difference]: With dead ends: 84 [2024-11-09 05:47:59,433 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 05:47:59,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:47:59,434 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 51 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:47:59,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:47:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 05:47:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2024-11-09 05:47:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 73 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:47:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2024-11-09 05:47:59,443 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 25 [2024-11-09 05:47:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:47:59,444 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2024-11-09 05:47:59,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:47:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2024-11-09 05:47:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:47:59,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:47:59,446 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:47:59,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-09 05:47:59,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:47:59,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 05:48:00,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:00,047 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:48:00,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:48:00,048 INFO L85 PathProgramCache]: Analyzing trace with hash -197665681, now seen corresponding path program 2 times [2024-11-09 05:48:00,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:48:00,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104221918] [2024-11-09 05:48:00,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:48:00,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:48:00,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:48:00,053 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:48:00,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-09 05:48:00,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:48:00,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:00,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:48:00,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:00,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:00,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:03,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:48:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104221918] [2024-11-09 05:48:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104221918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1716377003] [2024-11-09 05:48:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:48:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:48:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:48:03,296 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:48:03,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 05:48:03,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:48:03,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:03,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:48:03,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:03,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:04,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1716377003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108014763] [2024-11-09 05:48:10,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:48:10,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:48:10,375 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:48:10,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 05:48:10,517 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:48:10,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:10,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:48:10,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:10,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:10,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108014763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:14,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:48:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11, 11, 11, 12] total 47 [2024-11-09 05:48:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276383978] [2024-11-09 05:48:14,620 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:48:14,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 05:48:14,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:48:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 05:48:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1903, Unknown=2, NotChecked=0, Total=2256 [2024-11-09 05:48:14,624 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 48 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 05:48:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:48:19,622 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2024-11-09 05:48:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 05:48:19,623 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 28 [2024-11-09 05:48:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:48:19,624 INFO L225 Difference]: With dead ends: 104 [2024-11-09 05:48:19,625 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 05:48:19,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=496, Invalid=2472, Unknown=2, NotChecked=0, Total=2970 [2024-11-09 05:48:19,627 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 290 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:48:19,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1038 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 05:48:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 05:48:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-11-09 05:48:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 97 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:48:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2024-11-09 05:48:19,642 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 28 [2024-11-09 05:48:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:48:19,643 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2024-11-09 05:48:19,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 05:48:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2024-11-09 05:48:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 05:48:19,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:48:19,644 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:48:19,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-09 05:48:19,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 05:48:20,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:48:20,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:48:20,250 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:48:20,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:48:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash -731420646, now seen corresponding path program 1 times [2024-11-09 05:48:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:48:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35772732] [2024-11-09 05:48:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:20,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:48:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:48:20,253 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:48:20,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 05:48:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:20,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:48:20,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:20,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:48:20,910 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:48:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35772732] [2024-11-09 05:48:20,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35772732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551812160] [2024-11-09 05:48:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:20,911 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:48:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:48:20,915 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:48:20,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 05:48:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:21,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:48:21,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:21,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:48:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1551812160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713945939] [2024-11-09 05:48:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:21,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:21,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:48:21,424 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:48:21,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 05:48:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:21,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:48:21,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:21,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:48:21,894 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 05:48:21,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 05:48:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:48:21,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:48:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713945939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:28,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:48:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 7, 7] total 24 [2024-11-09 05:48:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026555695] [2024-11-09 05:48:28,471 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:48:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:48:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:48:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:48:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=451, Unknown=3, NotChecked=0, Total=552 [2024-11-09 05:48:28,474 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 05:48:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:48:30,350 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2024-11-09 05:48:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 05:48:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 41 [2024-11-09 05:48:30,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:48:30,352 INFO L225 Difference]: With dead ends: 111 [2024-11-09 05:48:30,352 INFO L226 Difference]: Without dead ends: 111 [2024-11-09 05:48:30,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=268, Invalid=1211, Unknown=3, NotChecked=0, Total=1482 [2024-11-09 05:48:30,354 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 139 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:48:30,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 511 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:48:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-09 05:48:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2024-11-09 05:48:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.271604938271605) internal successors, (103), 95 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:48:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2024-11-09 05:48:30,366 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 41 [2024-11-09 05:48:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:48:30,367 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2024-11-09 05:48:30,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 05:48:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2024-11-09 05:48:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:48:30,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:48:30,371 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:48:30,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-09 05:48:30,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-09 05:48:30,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 05:48:30,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:30,974 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:48:30,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:48:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1547035201, now seen corresponding path program 3 times [2024-11-09 05:48:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:48:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301964730] [2024-11-09 05:48:30,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:48:30,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:48:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:48:30,977 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:48:30,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 05:48:31,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 05:48:31,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:31,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 05:48:31,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:31,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:32,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:37,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:48:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301964730] [2024-11-09 05:48:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301964730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585103090] [2024-11-09 05:48:37,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:48:37,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:48:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:48:37,543 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:48:37,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-09 05:48:38,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 05:48:38,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:38,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 05:48:38,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:38,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:38,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:52,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [585103090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383227482] [2024-11-09 05:48:52,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:48:52,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:52,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:48:52,949 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:48:52,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 05:48:57,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 05:48:57,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:48:57,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:48:57,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:57,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:48:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:58,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:49:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383227482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:23,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:49:23,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 22, 19, 23] total 76 [2024-11-09 05:49:23,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611692246] [2024-11-09 05:49:23,724 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:23,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-09 05:49:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:23,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-09 05:49:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=814, Invalid=4886, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 05:49:23,729 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 76 states, 72 states have (on average 2.7083333333333335) internal successors, (195), 72 states have internal predecessors, (195), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:35,799 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2024-11-09 05:49:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 05:49:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 72 states have (on average 2.7083333333333335) internal successors, (195), 72 states have internal predecessors, (195), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2024-11-09 05:49:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:35,800 INFO L225 Difference]: With dead ends: 99 [2024-11-09 05:49:35,800 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 05:49:35,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=847, Invalid=5473, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 05:49:35,803 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 199 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:35,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1582 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-09 05:49:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 05:49:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-09 05:49:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 92 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:49:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-09 05:49:35,808 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 52 [2024-11-09 05:49:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:35,808 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-09 05:49:35,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 72 states have (on average 2.7083333333333335) internal successors, (195), 72 states have internal predecessors, (195), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-09 05:49:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:49:35,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:35,810 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:35,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:36,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:36,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:36,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:36,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:36,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1693001731, now seen corresponding path program 1 times [2024-11-09 05:49:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873452969] [2024-11-09 05:49:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:36,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:36,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:36,414 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:36,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-09 05:49:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:36,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:49:36,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:36,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:36,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:37,379 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-09 05:49:37,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:49:37,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:49:37,423 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:49:37,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:49:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2024-11-09 05:49:37,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:37,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:37,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873452969] [2024-11-09 05:49:37,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873452969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1896054288] [2024-11-09 05:49:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:49:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:49:37,900 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:49:37,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 05:49:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:38,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:49:38,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:38,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:38,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:49:39,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:49:39,173 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:49:39,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:49:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2024-11-09 05:49:39,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1896054288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68360700] [2024-11-09 05:49:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:39,479 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:39,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 05:49:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:39,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:49:39,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:39,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:39,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:49:40,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:49:40,360 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:49:40,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:49:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2024-11-09 05:49:40,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68360700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:49:42,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-09 05:49:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988901270] [2024-11-09 05:49:42,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:42,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:49:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:49:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2024-11-09 05:49:42,745 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:49:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:43,781 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2024-11-09 05:49:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:49:43,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2024-11-09 05:49:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:43,784 INFO L225 Difference]: With dead ends: 129 [2024-11-09 05:49:43,784 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 05:49:43,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=66, Invalid=279, Unknown=1, NotChecked=34, Total=380 [2024-11-09 05:49:43,785 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 86 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:43,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 402 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 308 Invalid, 0 Unknown, 110 Unchecked, 0.7s Time] [2024-11-09 05:49:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 05:49:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2024-11-09 05:49:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 95 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:49:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2024-11-09 05:49:43,791 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 61 [2024-11-09 05:49:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:43,792 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2024-11-09 05:49:43,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:49:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2024-11-09 05:49:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:49:43,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:43,794 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:43,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:44,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:44,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:49:44,395 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:44,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 412034517, now seen corresponding path program 1 times [2024-11-09 05:49:44,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855425998] [2024-11-09 05:49:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:44,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:44,400 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:44,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-09 05:49:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:44,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:49:44,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 05:49:44,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:49:44,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855425998] [2024-11-09 05:49:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855425998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:44,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:49:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828294729] [2024-11-09 05:49:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:44,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:49:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:49:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:49:44,604 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:49:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:44,640 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-09 05:49:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:49:44,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2024-11-09 05:49:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:44,642 INFO L225 Difference]: With dead ends: 107 [2024-11-09 05:49:44,642 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 05:49:44,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:49:44,643 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:44,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 237 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:49:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 05:49:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2024-11-09 05:49:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 86 states have (on average 1.244186046511628) internal successors, (107), 97 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:49:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-09 05:49:44,650 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 64 [2024-11-09 05:49:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:44,651 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-09 05:49:44,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:49:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-09 05:49:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:49:44,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:44,654 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:44,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-09 05:49:44,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:44,854 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:44,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1395419946, now seen corresponding path program 1 times [2024-11-09 05:49:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:44,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53005047] [2024-11-09 05:49:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:44,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:44,857 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-09 05:49:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:45,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:49:45,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:45,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:49:45,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53005047] [2024-11-09 05:49:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53005047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:49:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601128806] [2024-11-09 05:49:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:45,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:49:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:49:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:49:45,064 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:49:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:45,152 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-09 05:49:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:49:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-09 05:49:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:45,154 INFO L225 Difference]: With dead ends: 107 [2024-11-09 05:49:45,154 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 05:49:45,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:49:45,155 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:45,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 05:49:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-11-09 05:49:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:49:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2024-11-09 05:49:45,160 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 64 [2024-11-09 05:49:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:45,161 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2024-11-09 05:49:45,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:49:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2024-11-09 05:49:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:49:45,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:45,163 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:45,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-09 05:49:45,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:45,364 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:45,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 621695763, now seen corresponding path program 1 times [2024-11-09 05:49:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:45,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034932120] [2024-11-09 05:49:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:45,366 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:45,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-09 05:49:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:45,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:49:45,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:45,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:45,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:46,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034932120] [2024-11-09 05:49:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034932120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1939729216] [2024-11-09 05:49:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:46,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:49:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:49:46,020 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:49:46,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-09 05:49:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:46,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:49:46,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:46,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:46,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1939729216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:46,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344731067] [2024-11-09 05:49:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:46,784 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:46,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 05:49:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:46,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:49:46,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:46,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:49:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:47,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344731067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:47,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:49:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 7 [2024-11-09 05:49:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113946330] [2024-11-09 05:49:47,297 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:47,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:49:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:49:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:49:47,298 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:49:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:47,589 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2024-11-09 05:49:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:49:47,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-09 05:49:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:47,591 INFO L225 Difference]: With dead ends: 122 [2024-11-09 05:49:47,591 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 05:49:47,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:49:47,592 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:47,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 269 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:49:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 05:49:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2024-11-09 05:49:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 106 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:49:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2024-11-09 05:49:47,597 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 67 [2024-11-09 05:49:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:47,597 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2024-11-09 05:49:47,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:49:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2024-11-09 05:49:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:49:47,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:47,599 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:47,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-09 05:49:47,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:48,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:48,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:48,200 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:48,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash 621695764, now seen corresponding path program 1 times [2024-11-09 05:49:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:48,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604354531] [2024-11-09 05:49:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:48,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:48,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:48,202 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:48,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-09 05:49:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:48,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:49:48,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:48,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:48,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:50,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604354531] [2024-11-09 05:49:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604354531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523760276] [2024-11-09 05:49:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:50,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:49:50,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:49:50,028 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:49:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-09 05:49:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:50,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:49:50,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:50,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:50,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:51,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523760276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046591471] [2024-11-09 05:49:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:51,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:51,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:51,782 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:51,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 05:49:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:52,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:49:52,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:52,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:49:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:52,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 05:49:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046591471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:53,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:49:53,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-09 05:49:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808029416] [2024-11-09 05:49:53,496 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:53,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:49:53,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:49:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:49:53,498 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:54,868 INFO L93 Difference]: Finished difference Result 159 states and 192 transitions. [2024-11-09 05:49:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:49:54,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 67 [2024-11-09 05:49:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:54,871 INFO L225 Difference]: With dead ends: 159 [2024-11-09 05:49:54,871 INFO L226 Difference]: Without dead ends: 159 [2024-11-09 05:49:54,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 378 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:49:54,872 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 173 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:54,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 576 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:49:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-09 05:49:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2024-11-09 05:49:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 141 states have internal predecessors, (181), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 05:49:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 192 transitions. [2024-11-09 05:49:54,881 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 192 transitions. Word has length 67 [2024-11-09 05:49:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:54,881 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 192 transitions. [2024-11-09 05:49:54,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 192 transitions. [2024-11-09 05:49:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:49:54,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:54,883 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:54,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:55,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:55,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:55,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:55,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:55,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1476241028, now seen corresponding path program 1 times [2024-11-09 05:49:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916374357] [2024-11-09 05:49:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:55,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:55,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:55,487 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-09 05:49:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:55,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:49:55,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:55,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:56,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916374357] [2024-11-09 05:49:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916374357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2068323528] [2024-11-09 05:49:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:49:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:49:56,068 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:49:56,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-09 05:49:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:56,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:49:56,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:56,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2068323528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:56,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039293068] [2024-11-09 05:49:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:49:56,790 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:49:56,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 05:49:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:57,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:49:57,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:57,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:49:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039293068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:49:57,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:49:57,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 05:49:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319552118] [2024-11-09 05:49:57,271 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:49:57,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:49:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:49:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:49:57,272 INFO L87 Difference]: Start difference. First operand 149 states and 192 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:57,516 INFO L93 Difference]: Finished difference Result 189 states and 246 transitions. [2024-11-09 05:49:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:49:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 68 [2024-11-09 05:49:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:57,518 INFO L225 Difference]: With dead ends: 189 [2024-11-09 05:49:57,518 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 05:49:57,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:49:57,519 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 78 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:57,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 256 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:49:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 05:49:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2024-11-09 05:49:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 162 states have (on average 1.3518518518518519) internal successors, (219), 171 states have internal predecessors, (219), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 05:49:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 242 transitions. [2024-11-09 05:49:57,527 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 242 transitions. Word has length 68 [2024-11-09 05:49:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:57,528 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 242 transitions. [2024-11-09 05:49:57,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:49:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 242 transitions. [2024-11-09 05:49:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:49:57,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:57,529 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:57,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2024-11-09 05:49:57,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-09 05:49:57,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-09 05:49:58,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:49:58,130 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:58,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2093189133, now seen corresponding path program 1 times [2024-11-09 05:49:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404071866] [2024-11-09 05:49:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:58,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:58,135 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:58,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2024-11-09 05:49:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:58,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:49:58,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 05:49:58,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:49:58,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:49:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404071866] [2024-11-09 05:49:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404071866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:49:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:49:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516244301] [2024-11-09 05:49:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:58,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:49:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:49:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:49:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:49:58,471 INFO L87 Difference]: Start difference. First operand 185 states and 242 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:49:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:49:58,537 INFO L93 Difference]: Finished difference Result 195 states and 247 transitions. [2024-11-09 05:49:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:49:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2024-11-09 05:49:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:49:58,540 INFO L225 Difference]: With dead ends: 195 [2024-11-09 05:49:58,541 INFO L226 Difference]: Without dead ends: 195 [2024-11-09 05:49:58,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:49:58,542 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:49:58,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 124 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:49:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-09 05:49:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 187. [2024-11-09 05:49:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 164 states have (on average 1.3109756097560976) internal successors, (215), 173 states have internal predecessors, (215), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 05:49:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 238 transitions. [2024-11-09 05:49:58,555 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 238 transitions. Word has length 68 [2024-11-09 05:49:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:49:58,556 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 238 transitions. [2024-11-09 05:49:58,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:49:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 238 transitions. [2024-11-09 05:49:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:49:58,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:49:58,558 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:49:58,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2024-11-09 05:49:58,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:58,759 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:49:58,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:49:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2092699537, now seen corresponding path program 1 times [2024-11-09 05:49:58,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:49:58,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604630939] [2024-11-09 05:49:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:49:58,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:49:58,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:49:58,761 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:49:58,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-09 05:49:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:49:59,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 05:49:59,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:49:59,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:49:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 05:49:59,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:49:59,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 05:49:59,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:49:59,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 05:49:59,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:49:59,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 05:49:59,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:49:59,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 05:50:00,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:50:00,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 05:50:00,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:50:00,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 05:50:01,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:50:01,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 05:50:01,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:50:01,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 05:50:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:30,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:14,282 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 86 treesize of output 84 [2024-11-09 05:51:14,288 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 171 treesize of output 169 [2024-11-09 05:51:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 162 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:51:15,189 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:51:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604630939] [2024-11-09 05:51:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604630939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [887210431] [2024-11-09 05:51:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:15,190 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:51:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:51:15,195 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:51:15,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-09 05:51:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:15,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 05:51:15,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:16,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:51:16,987 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 19 treesize of output 18 [2024-11-09 05:51:19,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:51:22,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:22,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:51:26,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:26,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:51:31,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:31,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:51:35,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:35,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-09 05:51:40,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:40,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-09 05:51:45,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:45,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-09 05:51:49,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:49,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-09 05:51:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:52,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:51:53,393 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 86 treesize of output 84 [2024-11-09 05:51:53,399 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 171 treesize of output 169 [2024-11-09 05:51:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 162 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:51:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [887210431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:51:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363839407] [2024-11-09 05:51:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:51:53,584 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:51:53,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 05:51:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:53,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:51:53,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:51:54,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:51:55,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:51:55,934 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 19 treesize of output 18 [2024-11-09 05:51:59,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 05:51:59,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:59,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:51:59,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:59,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:51:59,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:59,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:51:59,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:51:59,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:52:01,972 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2024-11-09 05:52:01,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2024-11-09 05:52:04,474 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2024-11-09 05:52:04,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2024-11-09 05:52:07,075 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2024-11-09 05:52:07,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2024-11-09 05:52:09,712 INFO L349 Elim1Store]: treesize reduction 120, result has 26.4 percent of original size [2024-11-09 05:52:09,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 70 [2024-11-09 05:52:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 161 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 05:52:19,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:33,372 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 54 treesize of output 52 [2024-11-09 05:52:33,407 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 103 treesize of output 101 [2024-11-09 05:52:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 130 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:52:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363839407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:34,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:52:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 27, 23, 21, 15] total 88 [2024-11-09 05:52:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409484609] [2024-11-09 05:52:34,356 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:52:34,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-09 05:52:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-09 05:52:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=6281, Unknown=53, NotChecked=0, Total=7832 [2024-11-09 05:52:34,361 INFO L87 Difference]: Start difference. First operand 187 states and 238 transitions. Second operand has 89 states, 87 states have (on average 2.6666666666666665) internal successors, (232), 87 states have internal predecessors, (232), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 05:52:36,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:39,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:42,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:46,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:48,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:51,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:53,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:52:55,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:00,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:04,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:06,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:08,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:12,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:16,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:18,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:20,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:25,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:29,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:31,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:33,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:37,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:42,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:44,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:46,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:50,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:55,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:57,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:53:59,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:03,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:07,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:09,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:14,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:19,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:22,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:54:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:22,271 INFO L93 Difference]: Finished difference Result 226 states and 280 transitions. [2024-11-09 05:54:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 05:54:22,273 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 87 states have (on average 2.6666666666666665) internal successors, (232), 87 states have internal predecessors, (232), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 68 [2024-11-09 05:54:22,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:22,275 INFO L225 Difference]: With dead ends: 226 [2024-11-09 05:54:22,275 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 05:54:22,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 304 SyntacticMatches, 11 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 174.7s TimeCoverageRelationStatistics Valid=2373, Invalid=12324, Unknown=65, NotChecked=0, Total=14762 [2024-11-09 05:54:22,281 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 257 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 14 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:22,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1160 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1800 Invalid, 34 Unknown, 0 Unchecked, 76.3s Time] [2024-11-09 05:54:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 05:54:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 205. [2024-11-09 05:54:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 180 states have (on average 1.3166666666666667) internal successors, (237), 190 states have internal predecessors, (237), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 05:54:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 260 transitions. [2024-11-09 05:54:22,291 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 260 transitions. Word has length 68 [2024-11-09 05:54:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:22,292 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 260 transitions. [2024-11-09 05:54:22,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 87 states have (on average 2.6666666666666665) internal successors, (232), 87 states have internal predecessors, (232), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 05:54:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 260 transitions. [2024-11-09 05:54:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:54:22,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:22,294 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:22,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2024-11-09 05:54:22,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-09 05:54:22,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-09 05:54:22,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:54:22,895 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:54:22,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 449176339, now seen corresponding path program 1 times [2024-11-09 05:54:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:54:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785436069] [2024-11-09 05:54:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:54:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:54:22,901 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:54:22,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-09 05:54:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:23,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:54:23,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:23,370 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:54:23,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:54:23,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:54:23,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 05:54:24,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:24,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 05:54:24,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:24,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 05:54:25,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:25,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 05:54:25,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:25,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 05:54:26,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:26,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 05:54:27,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:27,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 05:54:28,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:28,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 05:54:29,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:54:29,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 05:55:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:03,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:12,845 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 86 treesize of output 84 [2024-11-09 05:55:12,852 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 20976 treesize of output 20974 [2024-11-09 05:55:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:55:14,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:55:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785436069] [2024-11-09 05:55:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785436069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428765902] [2024-11-09 05:55:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:14,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:55:14,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:55:14,837 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:55:14,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-09 05:55:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:15,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 05:55:15,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:16,390 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:55:16,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:55:17,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:55:18,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 05:55:20,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:55:25,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:55:30,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:55:35,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:55:40,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2024-11-09 05:55:45,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2024-11-09 05:55:50,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 38 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2024-11-09 05:55:55,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 47 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2024-11-09 05:56:00,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2024-11-09 05:56:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:00,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:56:01,017 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 86 treesize of output 84 [2024-11-09 05:56:01,022 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 20464 treesize of output 20462 [2024-11-09 05:56:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:56:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [428765902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:56:02,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606773192] [2024-11-09 05:56:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:02,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:56:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:56:02,440 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:56:02,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-09 05:56:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:02,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 05:56:02,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:56:03,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:56:04,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:56:05,334 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 19 treesize of output 18 [2024-11-09 05:56:05,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:05,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:56:05,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 05:56:06,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:06,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:56:07,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:07,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:56:08,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:08,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:56:08,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:08,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-09 05:56:09,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:09,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-09 05:56:10,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:56:10,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-09 05:56:11,518 INFO L349 Elim1Store]: treesize reduction 180, result has 26.2 percent of original size [2024-11-09 05:56:11,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 77 treesize of output 100 [2024-11-09 05:56:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 1 proven. 191 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:56:15,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:56:20,817 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 78 treesize of output 76 [2024-11-09 05:56:20,875 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 10704 treesize of output 10702 [2024-11-09 05:56:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 160 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:56:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606773192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:56:25,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:56:25,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 28, 24, 27, 27] total 114 [2024-11-09 05:56:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140256317] [2024-11-09 05:56:25,405 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:56:25,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-09 05:56:25,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:56:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-09 05:56:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2490, Invalid=10591, Unknown=29, NotChecked=0, Total=13110 [2024-11-09 05:56:25,413 INFO L87 Difference]: Start difference. First operand 205 states and 260 transitions. Second operand has 115 states, 112 states have (on average 2.4642857142857144) internal successors, (276), 112 states have internal predecessors, (276), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:56:28,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:31,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:34,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:37,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:39,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:41,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:46,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:48,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:52,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:56,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:56:58,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:01,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:03,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:05,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:09,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:13,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:16,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:18,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:21,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:25,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:29,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:31,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:34,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:36,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:40,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:45,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:47,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:49,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:51,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:57:56,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:00,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:02,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:05,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:07,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:11,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:16,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:18,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:20,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:22,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:27,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:31,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:33,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:36,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:42,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:44,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:49,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:52,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:54,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:58:59,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:59:01,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:59:04,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:59:07,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:59:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:59:07,627 INFO L93 Difference]: Finished difference Result 254 states and 312 transitions. [2024-11-09 05:59:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 05:59:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 112 states have (on average 2.4642857142857144) internal successors, (276), 112 states have internal predecessors, (276), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 69 [2024-11-09 05:59:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:59:07,630 INFO L225 Difference]: With dead ends: 254 [2024-11-09 05:59:07,630 INFO L226 Difference]: Without dead ends: 252 [2024-11-09 05:59:07,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 290 SyntacticMatches, 7 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10197 ImplicationChecksByTransitivity, 144.8s TimeCoverageRelationStatistics Valid=3947, Invalid=21450, Unknown=43, NotChecked=0, Total=25440 [2024-11-09 05:59:07,638 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 704 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 47 mSolverCounterUnsat, 51 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 51 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:59:07,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1181 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2933 Invalid, 51 Unknown, 0 Unchecked, 119.0s Time] [2024-11-09 05:59:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-09 05:59:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 208. [2024-11-09 05:59:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 183 states have (on average 1.3005464480874316) internal successors, (238), 192 states have internal predecessors, (238), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 05:59:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 261 transitions. [2024-11-09 05:59:07,649 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 261 transitions. Word has length 69 [2024-11-09 05:59:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:59:07,649 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 261 transitions. [2024-11-09 05:59:07,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 112 states have (on average 2.4642857142857144) internal successors, (276), 112 states have internal predecessors, (276), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:59:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 261 transitions. [2024-11-09 05:59:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:59:07,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:59:07,651 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:59:07,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-09 05:59:07,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2024-11-09 05:59:08,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-09 05:59:08,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:59:08,253 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:59:08,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:59:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1078085789, now seen corresponding path program 1 times [2024-11-09 05:59:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:59:08,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4800798] [2024-11-09 05:59:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:08,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:59:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:59:08,256 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:59:08,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-09 05:59:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:08,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:59:08,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:08,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:59:08,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:59:09,612 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-09 05:59:09,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:09,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:09,667 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:09,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:09,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:09,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:09,974 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:09,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 4 not checked. [2024-11-09 05:59:10,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:12,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:59:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4800798] [2024-11-09 05:59:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4800798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:59:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [269864955] [2024-11-09 05:59:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:12,585 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:59:12,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:59:12,588 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:59:12,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-09 05:59:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:13,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:59:13,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:13,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:59:13,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:59:14,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:14,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:14,479 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:14,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:14,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:14,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:14,691 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:14,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 4 not checked. [2024-11-09 05:59:14,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [269864955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:59:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202617283] [2024-11-09 05:59:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:15,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:59:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:59:15,082 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:59:15,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-09 05:59:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:15,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 05:59:15,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:15,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:59:15,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:59:16,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:16,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:16,254 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:16,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:16,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:59:16,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 05:59:16,463 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:59:16,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 05:59:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 4 not checked. [2024-11-09 05:59:16,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202617283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:59:16,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:59:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2024-11-09 05:59:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031441286] [2024-11-09 05:59:16,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:59:16,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:59:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:59:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:59:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=149, Unknown=2, NotChecked=24, Total=210 [2024-11-09 05:59:16,923 INFO L87 Difference]: Start difference. First operand 208 states and 261 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:59:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:59:18,729 INFO L93 Difference]: Finished difference Result 220 states and 270 transitions. [2024-11-09 05:59:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:59:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2024-11-09 05:59:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:59:18,732 INFO L225 Difference]: With dead ends: 220 [2024-11-09 05:59:18,732 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 05:59:18,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=98, Invalid=456, Unknown=2, NotChecked=44, Total=600 [2024-11-09 05:59:18,733 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 111 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:59:18,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 456 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 423 Invalid, 0 Unknown, 131 Unchecked, 1.2s Time] [2024-11-09 05:59:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 05:59:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2024-11-09 05:59:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 183 states have (on average 1.289617486338798) internal successors, (236), 192 states have internal predecessors, (236), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 05:59:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 259 transitions. [2024-11-09 05:59:18,742 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 259 transitions. Word has length 72 [2024-11-09 05:59:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:59:18,743 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 259 transitions. [2024-11-09 05:59:18,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:59:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 259 transitions. [2024-11-09 05:59:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:59:18,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:59:18,744 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:59:18,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2024-11-09 05:59:18,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-09 05:59:19,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-09 05:59:19,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:59:19,346 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 05:59:19,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:59:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1335435928, now seen corresponding path program 1 times [2024-11-09 05:59:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:59:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202616114] [2024-11-09 05:59:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:19,347 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 [2024-11-09 05:59:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:59:19,349 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 05:59:19,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2024-11-09 05:59:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:19,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 05:59:19,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:19,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:59:19,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:59:20,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 05:59:20,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:20,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 05:59:20,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:20,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 05:59:21,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:21,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 05:59:21,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:21,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 05:59:22,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:22,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 05:59:22,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:22,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 05:59:23,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:23,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 05:59:24,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:24,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 05:59:25,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:59:28,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:59:28,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 89 treesize of output 31 [2024-11-09 05:59:28,552 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 16 treesize of output 13 [2024-11-09 05:59:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 2 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:59:28,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:29,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:59:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202616114] [2024-11-09 05:59:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202616114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:59:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810608228] [2024-11-09 05:59:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:29,374 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:59:29,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:59:29,375 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:59:29,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-09 05:59:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:30,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 05:59:30,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:30,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 05:59:30,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:59:31,426 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 19 treesize of output 18 [2024-11-09 05:59:31,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:59:32,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:59:33,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:59:33,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:59:34,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2024-11-09 05:59:35,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2024-11-09 05:59:36,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2024-11-09 05:59:37,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2024-11-09 05:59:38,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-09 05:59:40,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2024-11-09 05:59:40,665 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 16 treesize of output 13 [2024-11-09 05:59:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 2 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:59:40,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810608228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:59:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836677651] [2024-11-09 05:59:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:41,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:59:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:59:41,023 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:59:41,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-09 05:59:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:41,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 05:59:41,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:59:41,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 05:59:42,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 05:59:43,502 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 19 treesize of output 18 [2024-11-09 05:59:44,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 05:59:44,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 05:59:44,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-09 05:59:45,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-09 05:59:46,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 05:59:47,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2024-11-09 05:59:47,809 INFO L349 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2024-11-09 05:59:47,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 80 [2024-11-09 05:59:48,563 INFO L349 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2024-11-09 05:59:48,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 80 [2024-11-09 05:59:49,304 INFO L349 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2024-11-09 05:59:49,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 80 [2024-11-09 05:59:51,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2024-11-09 05:59:51,891 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 16 treesize of output 13 [2024-11-09 05:59:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 178 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:59:51,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:59:52,105 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 46 treesize of output 42 [2024-11-09 06:00:01,101 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 70 treesize of output 68 [2024-11-09 06:00:01,145 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 5040 treesize of output 5038 [2024-11-09 06:00:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 132 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 06:00:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836677651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:04,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:00:04,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 24, 22] total 95 [2024-11-09 06:00:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908577219] [2024-11-09 06:00:04,584 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:04,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-09 06:00:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:00:04,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-09 06:00:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1269, Invalid=8237, Unknown=0, NotChecked=0, Total=9506 [2024-11-09 06:00:04,589 INFO L87 Difference]: Start difference. First operand 208 states and 259 transitions. Second operand has 96 states, 94 states have (on average 2.5531914893617023) internal successors, (240), 92 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 06:00:06,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:09,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:13,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:16,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:30,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:32,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:00:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:33,641 INFO L93 Difference]: Finished difference Result 263 states and 323 transitions. [2024-11-09 06:00:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 06:00:33,644 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 94 states have (on average 2.5531914893617023) internal successors, (240), 92 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 73 [2024-11-09 06:00:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:33,646 INFO L225 Difference]: With dead ends: 263 [2024-11-09 06:00:33,646 INFO L226 Difference]: Without dead ends: 263 [2024-11-09 06:00:33,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 216 SyntacticMatches, 10 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=2089, Invalid=15733, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 06:00:33,649 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 235 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:33,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1481 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2453 Invalid, 6 Unknown, 0 Unchecked, 21.8s Time] [2024-11-09 06:00:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-09 06:00:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 211. [2024-11-09 06:00:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 186 states have (on average 1.2956989247311828) internal successors, (241), 195 states have internal predecessors, (241), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 06:00:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 264 transitions. [2024-11-09 06:00:33,659 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 264 transitions. Word has length 73 [2024-11-09 06:00:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:33,660 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 264 transitions. [2024-11-09 06:00:33,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 94 states have (on average 2.5531914893617023) internal successors, (240), 92 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 06:00:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 264 transitions. [2024-11-09 06:00:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 06:00:33,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:33,662 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:33,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:33,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-09 06:00:34,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:34,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:34,263 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 06:00:34,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1974236668, now seen corresponding path program 1 times [2024-11-09 06:00:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:00:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528053198] [2024-11-09 06:00:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:34,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:00:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:00:34,269 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:00:34,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2024-11-09 06:00:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:34,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:00:34,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:35,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:35,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-09 06:00:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:36,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:00:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528053198] [2024-11-09 06:00:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528053198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [983809446] [2024-11-09 06:00:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:36,636 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:00:36,638 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:00:36,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2024-11-09 06:00:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:37,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:00:37,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:37,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:38,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-09 06:00:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [983809446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556212836] [2024-11-09 06:00:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:38,467 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:38,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-09 06:00:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:38,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:00:38,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:39,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:39,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-09 06:00:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556212836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:39,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:00:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2024-11-09 06:00:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559166535] [2024-11-09 06:00:39,938 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:39,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 06:00:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:00:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 06:00:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:00:39,940 INFO L87 Difference]: Start difference. First operand 211 states and 264 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:00:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:42,289 INFO L93 Difference]: Finished difference Result 250 states and 314 transitions. [2024-11-09 06:00:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:00:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 75 [2024-11-09 06:00:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:42,292 INFO L225 Difference]: With dead ends: 250 [2024-11-09 06:00:42,292 INFO L226 Difference]: Without dead ends: 250 [2024-11-09 06:00:42,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2024-11-09 06:00:42,293 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 90 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:42,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 443 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:00:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-09 06:00:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 218. [2024-11-09 06:00:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 194 states have (on average 1.2731958762886597) internal successors, (247), 202 states have internal predecessors, (247), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 06:00:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 270 transitions. [2024-11-09 06:00:42,304 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 270 transitions. Word has length 75 [2024-11-09 06:00:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:42,304 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 270 transitions. [2024-11-09 06:00:42,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:00:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 270 transitions. [2024-11-09 06:00:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 06:00:42,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:42,306 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:42,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2024-11-09 06:00:42,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2024-11-09 06:00:42,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:42,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:42,907 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 06:00:42,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1551648856, now seen corresponding path program 1 times [2024-11-09 06:00:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:00:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567516902] [2024-11-09 06:00:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:42,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:00:42,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:00:42,910 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:00:42,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2024-11-09 06:00:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:43,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:00:43,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:43,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:43,847 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:00:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567516902] [2024-11-09 06:00:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567516902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [803092247] [2024-11-09 06:00:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:43,848 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:43,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:00:43,850 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:00:43,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2024-11-09 06:00:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:44,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:00:44,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:44,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [803092247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501942656] [2024-11-09 06:00:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:45,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:45,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:45,043 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:45,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-09 06:00:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:45,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:00:45,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:45,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:45,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501942656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:45,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:00:45,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 06:00:45,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625077224] [2024-11-09 06:00:45,885 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:45,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:00:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:00:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:00:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:00:45,887 INFO L87 Difference]: Start difference. First operand 218 states and 270 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:00:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:46,111 INFO L93 Difference]: Finished difference Result 248 states and 297 transitions. [2024-11-09 06:00:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:00:46,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2024-11-09 06:00:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:46,113 INFO L225 Difference]: With dead ends: 248 [2024-11-09 06:00:46,113 INFO L226 Difference]: Without dead ends: 248 [2024-11-09 06:00:46,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:00:46,114 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:46,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 194 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:00:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-09 06:00:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 236. [2024-11-09 06:00:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 212 states have (on average 1.2924528301886793) internal successors, (274), 220 states have internal predecessors, (274), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 06:00:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 297 transitions. [2024-11-09 06:00:46,123 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 297 transitions. Word has length 74 [2024-11-09 06:00:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:46,124 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 297 transitions. [2024-11-09 06:00:46,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:00:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 297 transitions. [2024-11-09 06:00:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 06:00:46,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:46,126 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:46,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2024-11-09 06:00:46,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:46,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:46,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:00:46,727 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 06:00:46,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1071794573, now seen corresponding path program 1 times [2024-11-09 06:00:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:00:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279933916] [2024-11-09 06:00:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:46,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:00:46,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:00:46,730 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:00:46,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2024-11-09 06:00:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:47,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:00:47,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:47,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:00:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:47,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:00:48,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:00:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279933916] [2024-11-09 06:00:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279933916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1897922176] [2024-11-09 06:00:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:48,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:48,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:00:48,244 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:00:48,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2024-11-09 06:00:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:48,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:00:48,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:49,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:00:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:49,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:00:49,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1897922176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724221891] [2024-11-09 06:00:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:49,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:49,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:49,587 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:49,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-09 06:00:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:49,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:00:49,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:50,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:00:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 06:00:50,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:00:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724221891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:50,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:00:50,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 12, 8, 12, 8] total 17 [2024-11-09 06:00:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946657914] [2024-11-09 06:00:50,579 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:00:50,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 06:00:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:00:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 06:00:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:00:50,581 INFO L87 Difference]: Start difference. First operand 236 states and 297 transitions. Second operand has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 06:00:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:53,008 INFO L93 Difference]: Finished difference Result 260 states and 329 transitions. [2024-11-09 06:00:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:00:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2024-11-09 06:00:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:53,011 INFO L225 Difference]: With dead ends: 260 [2024-11-09 06:00:53,011 INFO L226 Difference]: Without dead ends: 260 [2024-11-09 06:00:53,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 433 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:00:53,012 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 133 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:53,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 446 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:00:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-09 06:00:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 238. [2024-11-09 06:00:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 214 states have (on average 1.2897196261682242) internal successors, (276), 222 states have internal predecessors, (276), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 06:00:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2024-11-09 06:00:53,022 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 76 [2024-11-09 06:00:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:53,022 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2024-11-09 06:00:53,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 06:00:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2024-11-09 06:00:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 06:00:53,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:53,024 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:00:53,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:53,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:53,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2024-11-09 06:00:53,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:53,625 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 06:00:53,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1134106501, now seen corresponding path program 1 times [2024-11-09 06:00:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:00:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493359220] [2024-11-09 06:00:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:53,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:00:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:00:53,628 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:00:53,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2024-11-09 06:00:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:54,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:00:54,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:55,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 06:00:56,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 06:00:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 06:00:56,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:00:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:00:57,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:00:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493359220] [2024-11-09 06:00:57,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493359220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:00:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [298324048] [2024-11-09 06:00:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:57,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:00:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:00:57,769 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:00:57,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2024-11-09 06:00:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:58,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:00:58,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:59,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 06:00:59,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 06:00:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:00:59,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:01:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:01:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [298324048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:01:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155031138] [2024-11-09 06:01:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:01:00,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:01:00,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:01:00,079 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:01:00,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-09 06:01:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:01:00,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:01:00,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:01:00,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 06:01:01,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 06:01:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 06:01:01,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:01:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 06:01:01,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155031138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:01:01,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:01:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 13, 8, 13, 8] total 32 [2024-11-09 06:01:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492564931] [2024-11-09 06:01:01,374 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:01:01,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 06:01:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:01:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 06:01:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:01:01,375 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 33 states, 32 states have (on average 2.9375) internal successors, (94), 28 states have internal predecessors, (94), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:01:03,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:01:05,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:01:08,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:01:10,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:01:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:01:16,239 INFO L93 Difference]: Finished difference Result 279 states and 348 transitions. [2024-11-09 06:01:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 06:01:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.9375) internal successors, (94), 28 states have internal predecessors, (94), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 77 [2024-11-09 06:01:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:01:16,241 INFO L225 Difference]: With dead ends: 279 [2024-11-09 06:01:16,241 INFO L226 Difference]: Without dead ends: 279 [2024-11-09 06:01:16,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 424 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=400, Invalid=2462, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 06:01:16,242 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 200 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:01:16,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 854 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 890 Invalid, 4 Unknown, 0 Unchecked, 12.0s Time] [2024-11-09 06:01:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-09 06:01:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2024-11-09 06:01:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 217 states have (on average 1.2857142857142858) internal successors, (279), 226 states have internal predecessors, (279), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-09 06:01:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 302 transitions. [2024-11-09 06:01:16,249 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 302 transitions. Word has length 77 [2024-11-09 06:01:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:01:16,250 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 302 transitions. [2024-11-09 06:01:16,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.9375) internal successors, (94), 28 states have internal predecessors, (94), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:01:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 302 transitions. [2024-11-09 06:01:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 06:01:16,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:01:16,251 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:01:16,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2024-11-09 06:01:16,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-11-09 06:01:16,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2024-11-09 06:01:16,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:01:16,852 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 06:01:16,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:01:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 310401374, now seen corresponding path program 1 times [2024-11-09 06:01:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:01:16,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870222074] [2024-11-09 06:01:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:01:16,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:01:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:01:16,854 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:01:16,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9b0a11-fb80-4771-9635-d11a0b8c23c4/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2024-11-09 06:01:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:01:17,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 06:01:17,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:01:17,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:01:17,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-09 06:01:17,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:17,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-09 06:01:17,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:17,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2024-11-09 06:01:17,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:17,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 58 [2024-11-09 06:01:18,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:18,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 70 [2024-11-09 06:01:18,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:18,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 82 [2024-11-09 06:01:19,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:19,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 94 [2024-11-09 06:01:19,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:01:19,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 106 [2024-11-09 06:01:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:01:47,751 INFO L311 TraceCheckSpWp]: Computing backward predicates...