./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:35,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:36,067 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-24 21:44:36,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:36,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:36,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:36,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:36,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:36,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:36,104 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:36,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:36,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:36,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:36,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:36,107 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:36,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:36,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:44:36,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:36,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:36,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:36,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:36,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:44:36,111 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:36,111 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:36,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:36,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:44:36,113 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:36,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:36,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:36,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:44:36,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:36,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:36,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:36,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:36,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:36,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:36,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:36,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:36,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:44:36,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:44:36,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:36,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:36,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:36,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:36,124 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-24 21:44:36,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:36,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:36,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:36,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:36,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:36,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-24 21:44:39,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:40,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:40,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-24 21:44:40,264 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/766e12d01/3f98f814b10448b6bcc78afd8c9e5e14/FLAGef80d99ea [2023-11-24 21:44:40,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/766e12d01/3f98f814b10448b6bcc78afd8c9e5e14 [2023-11-24 21:44:40,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:40,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:40,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:40,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:40,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:40,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:40" (1/1) ... [2023-11-24 21:44:40,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9af701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:40, skipping insertion in model container [2023-11-24 21:44:40,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:40" (1/1) ... [2023-11-24 21:44:40,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:41,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:41,236 ERROR L324 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) [2023-11-24 21:44:41,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1855fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:41, skipping insertion in model container [2023-11-24 21:44:41,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:41,238 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:44:41,240 INFO L158 Benchmark]: Toolchain (without parser) took 953.99ms. Allocated memory is still 140.5MB. Free memory was 91.3MB in the beginning and 69.4MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-24 21:44:41,241 INFO L158 Benchmark]: CDTParser took 1.50ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 109.6MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:44:41,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 951.52ms. Allocated memory is still 140.5MB. Free memory was 91.3MB in the beginning and 69.4MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-24 21:44:41,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 109.6MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 951.52ms. Allocated memory is still 140.5MB. Free memory was 91.3MB in the beginning and 69.4MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:43,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:43,814 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-24 21:44:43,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:43,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:43,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:43,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:43,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:43,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:43,881 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:43,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:43,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:43,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:43,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:43,885 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:43,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:43,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:44:43,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:43,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:43,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:43,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:43,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:44:43,889 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:43,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:43,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:43,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:44:43,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:43,892 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:44:43,892 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:44:43,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:43,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:43,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:44:43,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:43,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:43,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:43,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:43,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:43,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:43,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:43,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:43,898 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:44:43,899 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:44:43,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:43,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:43,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:43,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:43,900 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:44:43,901 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-24 21:44:44,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:44,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:44,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:44,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:44,372 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:44,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-24 21:44:47,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:48,031 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:48,032 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-24 21:44:48,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/0d18c02c9/e8125333412f4d07a89e75566ec06072/FLAGb0a2d6b55 [2023-11-24 21:44:48,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/data/0d18c02c9/e8125333412f4d07a89e75566ec06072 [2023-11-24 21:44:48,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:48,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:48,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:48,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:48,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:48,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:48" (1/1) ... [2023-11-24 21:44:48,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46337cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:48, skipping insertion in model container [2023-11-24 21:44:48,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:48" (1/1) ... [2023-11-24 21:44:48,158 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:49,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:49,136 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:44:49,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:49,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:49,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:49,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:49,493 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:49,501 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:49,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49 WrapperNode [2023-11-24 21:44:49,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:49,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:49,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:49,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:49,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,701 INFO L138 Inliner]: procedures = 285, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1045 [2023-11-24 21:44:49,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:49,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:49,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:49,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:49,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,846 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 34, 3, 5, 220]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 56 writes are split as follows [0, 4, 2, 1, 49]. [2023-11-24 21:44:49,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:49,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:49,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:49,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:49,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (1/1) ... [2023-11-24 21:44:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:50,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:50,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 21:44:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 21:44:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:44:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:44:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:44:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:44:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 21:44:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:44:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:44:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:44:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-24 21:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-24 21:44:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-24 21:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 21:44:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-24 21:44:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:44:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:44:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 21:44:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-24 21:44:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-24 21:44:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:50,403 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:50,405 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:59,248 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:59,294 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:59,295 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-24 21:44:59,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:59 BoogieIcfgContainer [2023-11-24 21:44:59,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:59,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:59,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:59,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:59,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:48" (1/3) ... [2023-11-24 21:44:59,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ab1a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:59, skipping insertion in model container [2023-11-24 21:44:59,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:49" (2/3) ... [2023-11-24 21:44:59,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ab1a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:59, skipping insertion in model container [2023-11-24 21:44:59,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:59" (3/3) ... [2023-11-24 21:44:59,305 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2023-11-24 21:44:59,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:59,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:44:59,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:59,387 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3829a31d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:59,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:44:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 200 states have (on average 1.635) internal successors, (327), 205 states have internal predecessors, (327), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 21:44:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 21:44:59,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:59,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:59,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:44:59,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1518545934, now seen corresponding path program 1 times [2023-11-24 21:44:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:59,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658562925] [2023-11-24 21:44:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:59,430 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 [2023-11-24 21:44:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:59,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:44:59,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:44:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:59,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 21:44:59,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:59,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:59,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658562925] [2023-11-24 21:44:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658562925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883857742] [2023-11-24 21:44:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:44:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:44:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:44:59,828 INFO L87 Difference]: Start difference. First operand has 225 states, 200 states have (on average 1.635) internal successors, (327), 205 states have internal predecessors, (327), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:59,932 INFO L93 Difference]: Finished difference Result 220 states and 285 transitions. [2023-11-24 21:44:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:44:59,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 21:44:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:59,947 INFO L225 Difference]: With dead ends: 220 [2023-11-24 21:44:59,947 INFO L226 Difference]: Without dead ends: 219 [2023-11-24 21:44:59,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:44:59,953 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:59,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:44:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-24 21:45:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-24 21:45:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 196 states have (on average 1.2959183673469388) internal successors, (254), 201 states have internal predecessors, (254), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:45:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 284 transitions. [2023-11-24 21:45:00,017 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 284 transitions. Word has length 9 [2023-11-24 21:45:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:00,018 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 284 transitions. [2023-11-24 21:45:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 284 transitions. [2023-11-24 21:45:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:45:00,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:00,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:00,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:00,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:00,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:00,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1131489963, now seen corresponding path program 1 times [2023-11-24 21:45:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640315734] [2023-11-24 21:45:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:00,227 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 [2023-11-24 21:45:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:00,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:00,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:00,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:00,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:00,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:00,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640315734] [2023-11-24 21:45:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640315734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:00,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:00,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:45:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863489519] [2023-11-24 21:45:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:00,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:00,582 INFO L87 Difference]: Start difference. First operand 219 states and 284 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:05,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:45:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:08,845 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2023-11-24 21:45:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:45:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 21:45:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:08,851 INFO L225 Difference]: With dead ends: 341 [2023-11-24 21:45:08,851 INFO L226 Difference]: Without dead ends: 341 [2023-11-24 21:45:08,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:08,853 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 155 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:08,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 734 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2023-11-24 21:45:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-24 21:45:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2023-11-24 21:45:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 306 states have (on average 1.303921568627451) internal successors, (399), 311 states have internal predecessors, (399), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:45:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 429 transitions. [2023-11-24 21:45:08,886 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 429 transitions. Word has length 11 [2023-11-24 21:45:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:08,886 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 429 transitions. [2023-11-24 21:45:08,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 429 transitions. [2023-11-24 21:45:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:45:08,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:08,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:08,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:09,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:09,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:09,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:09,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2059992344, now seen corresponding path program 1 times [2023-11-24 21:45:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053331662] [2023-11-24 21:45:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:09,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:09,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:09,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:09,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:09,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:09,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:09,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:09,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:09,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-24 21:45:09,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:45:09,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-24 21:45:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:09,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:09,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053331662] [2023-11-24 21:45:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053331662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:45:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711074841] [2023-11-24 21:45:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:09,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:09,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:09,501 INFO L87 Difference]: Start difference. First operand 329 states and 429 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:10,315 INFO L93 Difference]: Finished difference Result 506 states and 666 transitions. [2023-11-24 21:45:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 21:45:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:10,320 INFO L225 Difference]: With dead ends: 506 [2023-11-24 21:45:10,320 INFO L226 Difference]: Without dead ends: 506 [2023-11-24 21:45:10,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:10,322 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 227 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:10,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 842 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:45:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-24 21:45:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 328. [2023-11-24 21:45:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 305 states have (on average 1.301639344262295) internal successors, (397), 310 states have internal predecessors, (397), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:45:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2023-11-24 21:45:10,348 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 14 [2023-11-24 21:45:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2023-11-24 21:45:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2023-11-24 21:45:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 21:45:10,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:10,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:10,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:10,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:10,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash 518278030, now seen corresponding path program 1 times [2023-11-24 21:45:10,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:10,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771605706] [2023-11-24 21:45:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:10,563 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 [2023-11-24 21:45:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:10,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:10,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:10,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:45:10,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:10,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:10,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771605706] [2023-11-24 21:45:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771605706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:10,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094865227] [2023-11-24 21:45:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:10,958 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:11,172 INFO L93 Difference]: Finished difference Result 336 states and 419 transitions. [2023-11-24 21:45:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:11,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-24 21:45:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:11,175 INFO L225 Difference]: With dead ends: 336 [2023-11-24 21:45:11,176 INFO L226 Difference]: Without dead ends: 336 [2023-11-24 21:45:11,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:11,177 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 36 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:11,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 720 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:45:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-24 21:45:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2023-11-24 21:45:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 311 states have (on average 1.2443729903536977) internal successors, (387), 316 states have internal predecessors, (387), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:45:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2023-11-24 21:45:11,221 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 48 [2023-11-24 21:45:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:11,222 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2023-11-24 21:45:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2023-11-24 21:45:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 21:45:11,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:11,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:11,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:11,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:11,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:11,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash 972862082, now seen corresponding path program 1 times [2023-11-24 21:45:11,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:11,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839776277] [2023-11-24 21:45:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:11,434 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 [2023-11-24 21:45:11,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:11,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:11,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:11,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:11,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:11,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:11,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839776277] [2023-11-24 21:45:11,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839776277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:11,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:11,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:45:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616640663] [2023-11-24 21:45:11,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:11,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:45:11,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:45:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:45:11,884 INFO L87 Difference]: Start difference. First operand 334 states and 417 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:12,119 INFO L93 Difference]: Finished difference Result 343 states and 426 transitions. [2023-11-24 21:45:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:45:12,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-24 21:45:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:12,123 INFO L225 Difference]: With dead ends: 343 [2023-11-24 21:45:12,123 INFO L226 Difference]: Without dead ends: 343 [2023-11-24 21:45:12,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:45:12,124 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1300 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:45:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-24 21:45:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-24 21:45:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 317 states have (on average 1.2429022082018928) internal successors, (394), 323 states have internal predecessors, (394), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-24 21:45:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 426 transitions. [2023-11-24 21:45:12,139 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 426 transitions. Word has length 48 [2023-11-24 21:45:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:12,140 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 426 transitions. [2023-11-24 21:45:12,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 426 transitions. [2023-11-24 21:45:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-24 21:45:12,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:12,143 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:12,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:12,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:12,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1058188914, now seen corresponding path program 1 times [2023-11-24 21:45:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:12,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597333597] [2023-11-24 21:45:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:12,349 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 [2023-11-24 21:45:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:12,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:12,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:12,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:12,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:13,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:13,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:13,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597333597] [2023-11-24 21:45:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597333597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:13,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:45:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229664120] [2023-11-24 21:45:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:45:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:45:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:45:13,093 INFO L87 Difference]: Start difference. First operand 343 states and 426 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:45:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:13,462 INFO L93 Difference]: Finished difference Result 349 states and 434 transitions. [2023-11-24 21:45:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:45:13,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2023-11-24 21:45:13,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:13,467 INFO L225 Difference]: With dead ends: 349 [2023-11-24 21:45:13,467 INFO L226 Difference]: Without dead ends: 349 [2023-11-24 21:45:13,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:45:13,469 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 17 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:13,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 946 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:45:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-24 21:45:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2023-11-24 21:45:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 318 states have (on average 1.2421383647798743) internal successors, (395), 325 states have internal predecessors, (395), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-24 21:45:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 430 transitions. [2023-11-24 21:45:13,486 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 430 transitions. Word has length 60 [2023-11-24 21:45:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:13,486 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 430 transitions. [2023-11-24 21:45:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:45:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 430 transitions. [2023-11-24 21:45:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 21:45:13,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:13,488 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:13,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:13,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:13,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:13,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash -356355389, now seen corresponding path program 1 times [2023-11-24 21:45:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:13,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946530690] [2023-11-24 21:45:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:13,698 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 [2023-11-24 21:45:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:13,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:13,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:45:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:14,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:14,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:14,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:14,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:14,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946530690] [2023-11-24 21:45:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946530690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:14,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155575642] [2023-11-24 21:45:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:14,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:14,306 INFO L87 Difference]: Start difference. First operand 346 states and 430 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:45:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:14,443 INFO L93 Difference]: Finished difference Result 348 states and 433 transitions. [2023-11-24 21:45:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2023-11-24 21:45:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:14,447 INFO L225 Difference]: With dead ends: 348 [2023-11-24 21:45:14,447 INFO L226 Difference]: Without dead ends: 348 [2023-11-24 21:45:14,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:14,448 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:14,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 784 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:45:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-24 21:45:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-11-24 21:45:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 319 states have (on average 1.244514106583072) internal successors, (397), 327 states have internal predecessors, (397), 19 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-24 21:45:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 433 transitions. [2023-11-24 21:45:14,464 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 433 transitions. Word has length 65 [2023-11-24 21:45:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:14,465 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 433 transitions. [2023-11-24 21:45:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:45:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 433 transitions. [2023-11-24 21:45:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 21:45:14,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:14,467 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:14,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:14,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:14,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:14,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1848689150, now seen corresponding path program 1 times [2023-11-24 21:45:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819779629] [2023-11-24 21:45:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:14,677 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 [2023-11-24 21:45:14,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:14,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:14,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:45:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:15,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:45:15,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:15,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:15,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:15,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819779629] [2023-11-24 21:45:15,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819779629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:15,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-24 21:45:15,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827938712] [2023-11-24 21:45:15,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:45:15,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:45:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:45:15,511 INFO L87 Difference]: Start difference. First operand 348 states and 433 transitions. Second operand has 8 states, 6 states have (on average 10.0) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 21:45:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:15,966 INFO L93 Difference]: Finished difference Result 357 states and 447 transitions. [2023-11-24 21:45:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:45:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.0) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 66 [2023-11-24 21:45:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:15,971 INFO L225 Difference]: With dead ends: 357 [2023-11-24 21:45:15,971 INFO L226 Difference]: Without dead ends: 357 [2023-11-24 21:45:15,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:45:15,972 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 4 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:15,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1558 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:45:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-24 21:45:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 356. [2023-11-24 21:45:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 326 states have (on average 1.2576687116564418) internal successors, (410), 334 states have internal predecessors, (410), 19 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-24 21:45:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 446 transitions. [2023-11-24 21:45:15,989 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 446 transitions. Word has length 66 [2023-11-24 21:45:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:15,990 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 446 transitions. [2023-11-24 21:45:15,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.0) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 21:45:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 446 transitions. [2023-11-24 21:45:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-24 21:45:15,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:15,992 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:16,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:16,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:16,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2071587203, now seen corresponding path program 2 times [2023-11-24 21:45:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559718672] [2023-11-24 21:45:16,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:45:16,207 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 [2023-11-24 21:45:16,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:16,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:16,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:16,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:45:16,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:45:16,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:45:16,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:17,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:17,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559718672] [2023-11-24 21:45:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559718672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:17,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-24 21:45:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438779946] [2023-11-24 21:45:17,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:45:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:45:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:45:17,534 INFO L87 Difference]: Start difference. First operand 356 states and 446 transitions. Second operand has 14 states, 12 states have (on average 5.5) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 21:45:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:19,018 INFO L93 Difference]: Finished difference Result 368 states and 465 transitions. [2023-11-24 21:45:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 21:45:19,025 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2023-11-24 21:45:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:19,028 INFO L225 Difference]: With dead ends: 368 [2023-11-24 21:45:19,028 INFO L226 Difference]: Without dead ends: 366 [2023-11-24 21:45:19,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2023-11-24 21:45:19,030 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 8 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:19,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1558 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:45:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-24 21:45:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2023-11-24 21:45:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 335 states have (on average 1.2597014925373133) internal successors, (422), 343 states have internal predecessors, (422), 19 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-24 21:45:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 458 transitions. [2023-11-24 21:45:19,054 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 458 transitions. Word has length 69 [2023-11-24 21:45:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:19,056 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 458 transitions. [2023-11-24 21:45:19,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.5) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 21:45:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 458 transitions. [2023-11-24 21:45:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-24 21:45:19,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:19,058 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:19,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:45:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:19,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1354008483, now seen corresponding path program 3 times [2023-11-24 21:45:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319222473] [2023-11-24 21:45:19,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:45:19,269 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 [2023-11-24 21:45:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:19,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:19,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:45:20,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:45:20,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:45:20,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:45:20,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-24 21:45:20,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-24 21:45:20,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319222473] [2023-11-24 21:45:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319222473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:20,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:20,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-24 21:45:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576416989] [2023-11-24 21:45:20,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:20,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:45:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:45:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:45:20,770 INFO L87 Difference]: Start difference. First operand 365 states and 458 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:45:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:23,397 INFO L93 Difference]: Finished difference Result 2684 states and 3423 transitions. [2023-11-24 21:45:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 21:45:23,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 75 [2023-11-24 21:45:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:23,415 INFO L225 Difference]: With dead ends: 2684 [2023-11-24 21:45:23,415 INFO L226 Difference]: Without dead ends: 2684 [2023-11-24 21:45:23,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2023-11-24 21:45:23,416 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 3179 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 5147 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:23,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3205 Valid, 5147 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 21:45:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2023-11-24 21:45:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1858. [2023-11-24 21:45:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1764 states have (on average 1.2704081632653061) internal successors, (2241), 1778 states have internal predecessors, (2241), 58 states have call successors, (58), 32 states have call predecessors, (58), 34 states have return successors, (62), 47 states have call predecessors, (62), 54 states have call successors, (62) [2023-11-24 21:45:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2361 transitions. [2023-11-24 21:45:23,514 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2361 transitions. Word has length 75 [2023-11-24 21:45:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:23,515 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2361 transitions. [2023-11-24 21:45:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:45:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2361 transitions. [2023-11-24 21:45:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-24 21:45:23,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:23,519 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:23,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:23,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:45:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 445728410, now seen corresponding path program 1 times [2023-11-24 21:45:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904162805] [2023-11-24 21:45:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:23,728 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 [2023-11-24 21:45:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:23,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:45:23,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f1b196-07c0-4fd2-bafb-46d7d68c4d78/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:45:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:24,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:45:24,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 21:45:24,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 21:45:26,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904162805] [2023-11-24 21:45:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904162805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:26,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-24 21:45:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869136853] [2023-11-24 21:45:26,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 21:45:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 21:45:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-24 21:45:26,445 INFO L87 Difference]: Start difference. First operand 1858 states and 2361 transitions. Second operand has 26 states, 24 states have (on average 4.666666666666667) internal successors, (112), 26 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)