./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:44:55,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:55,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:44:55,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:55,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:55,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:55,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:55,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:55,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:55,933 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:55,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:55,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:55,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:55,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:55,940 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:55,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:55,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:44:55,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:44:55,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:44:55,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:55,944 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:44:55,945 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:44:55,946 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:44:55,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:55,947 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:44:55,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:44:55,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:44:55,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:55,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:55,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:55,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:55,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:55,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:55,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:55,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:55,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:44:55,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:44:55,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:55,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:55,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:55,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:55,955 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_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2023-11-26 11:44:56,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:56,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:56,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:56,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:56,349 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:56,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-26 11:44:59,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:00,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:00,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-26 11:45:00,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/aa623b44a/9379dcda0b98421cb8caa3f3c06e6f8c/FLAGc3f39b2fd [2023-11-26 11:45:00,160 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/aa623b44a/9379dcda0b98421cb8caa3f3c06e6f8c [2023-11-26 11:45:00,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:00,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:00,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:00,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:00,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:00,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:00" (1/1) ... [2023-11-26 11:45:00,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae04d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:00, skipping insertion in model container [2023-11-26 11:45:00,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:00" (1/1) ... [2023-11-26 11:45:00,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:00,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:00,891 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) [2023-11-26 11:45:00,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12159b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:00, skipping insertion in model container [2023-11-26 11:45:00,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:00,893 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:45:00,895 INFO L158 Benchmark]: Toolchain (without parser) took 725.63ms. Allocated memory is still 127.9MB. Free memory was 85.9MB in the beginning and 66.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:45:00,896 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:00,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.50ms. Allocated memory is still 127.9MB. Free memory was 85.6MB in the beginning and 66.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:45:00,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.50ms. Allocated memory is still 127.9MB. Free memory was 85.6MB in the beginning and 66.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:03,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:03,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 11:45:03,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:03,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:03,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:03,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:03,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:03,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:03,761 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:03,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:03,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:03,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:03,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:03,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:03,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:03,765 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:03,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:03,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:03,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:03,768 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:45:03,768 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:45:03,768 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:45:03,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:03,769 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:45:03,770 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:45:03,770 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:45:03,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:03,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:03,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:03,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:03,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:03,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:03,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:03,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:03,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:03,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:03,775 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:45:03,775 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:45:03,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:03,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:03,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:03,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:03,777 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:45:03,777 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_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2023-11-26 11:45:04,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:04,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:04,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:04,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:04,236 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:04,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-26 11:45:07,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:07,784 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:07,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-26 11:45:07,813 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/6992aeaad/4c9293bbfa2b497b8c1a4a4aa002553c/FLAG152970e27 [2023-11-26 11:45:07,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/data/6992aeaad/4c9293bbfa2b497b8c1a4a4aa002553c [2023-11-26 11:45:07,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:07,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:07,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:07,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:07,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:07,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e707566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07, skipping insertion in model container [2023-11-26 11:45:07,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:08,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:08,875 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:45:08,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:08,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:09,001 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:09,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:09,160 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:09,170 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:09,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09 WrapperNode [2023-11-26 11:45:09,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:09,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:09,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:09,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:09,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,318 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2023-11-26 11:45:09,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:09,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:09,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:09,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:09,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,434 INFO L175 MemorySlicer]: Split 260 memory accesses to 4 slices as follows [34, 2, 5, 219]. 84 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 55 writes are split as follows [4, 0, 1, 50]. [2023-11-26 11:45:09,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:09,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:09,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:09,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:09,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (1/1) ... [2023-11-26 11:45:09,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:09,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:09,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 11:45:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 11:45:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 11:45:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 11:45:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 11:45:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 11:45:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:45:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:45:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:45:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:45:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:45:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:45:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 11:45:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 11:45:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 11:45:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 11:45:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 11:45:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 11:45:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 11:45:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 11:45:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:45:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:45:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:45:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:45:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:45:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 11:45:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:45:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:45:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:45:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:45:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:45:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:45:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:45:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:45:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:45:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:45:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:45:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:45:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:09,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:10,046 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:10,049 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:10,093 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:45:10,132 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:45:10,158 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:45:10,182 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:45:15,779 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:16,073 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:16,074 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-26 11:45:16,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:16 BoogieIcfgContainer [2023-11-26 11:45:16,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:16,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:16,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:16,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:16,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:07" (1/3) ... [2023-11-26 11:45:16,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac63e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:16, skipping insertion in model container [2023-11-26 11:45:16,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:09" (2/3) ... [2023-11-26 11:45:16,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac63e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:16, skipping insertion in model container [2023-11-26 11:45:16,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:16" (3/3) ... [2023-11-26 11:45:16,090 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2023-11-26 11:45:16,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:16,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 533 error locations. [2023-11-26 11:45:16,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:16,237 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;@27ba28c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:16,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 533 error locations. [2023-11-26 11:45:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 977 states, 433 states have (on average 2.5219399538106235) internal successors, (1092), 970 states have internal predecessors, (1092), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:45:16,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:16,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:45:16,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:16,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 55632, now seen corresponding path program 1 times [2023-11-26 11:45:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:16,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478304109] [2023-11-26 11:45:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:16,289 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 [2023-11-26 11:45:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:16,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:16,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:16,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:16,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 11:45:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:16,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:16,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478304109] [2023-11-26 11:45:16,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478304109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:45:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999794979] [2023-11-26 11:45:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:16,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:16,732 INFO L87 Difference]: Start difference. First operand has 977 states, 433 states have (on average 2.5219399538106235) internal successors, (1092), 970 states have internal predecessors, (1092), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:19,298 INFO L93 Difference]: Finished difference Result 974 states and 1039 transitions. [2023-11-26 11:45:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-26 11:45:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:19,355 INFO L225 Difference]: With dead ends: 974 [2023-11-26 11:45:19,355 INFO L226 Difference]: Without dead ends: 973 [2023-11-26 11:45:19,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:19,361 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 901 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:19,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 594 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:45:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-11-26 11:45:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 964. [2023-11-26 11:45:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 436 states have (on average 2.3211009174311927) internal successors, (1012), 957 states have internal predecessors, (1012), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1030 transitions. [2023-11-26 11:45:19,490 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1030 transitions. Word has length 2 [2023-11-26 11:45:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:19,490 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1030 transitions. [2023-11-26 11:45:19,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1030 transitions. [2023-11-26 11:45:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:45:19,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:19,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:45:19,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:19,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:19,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:19,694 INFO L85 PathProgramCache]: Analyzing trace with hash 55633, now seen corresponding path program 1 times [2023-11-26 11:45:19,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783575261] [2023-11-26 11:45:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,695 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 [2023-11-26 11:45:19,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:19,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:19,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:19,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:45:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:19,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:19,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783575261] [2023-11-26 11:45:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783575261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:19,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:45:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618532973] [2023-11-26 11:45:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:20,001 INFO L87 Difference]: Start difference. First operand 964 states and 1030 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:24,155 INFO L93 Difference]: Finished difference Result 1339 states and 1446 transitions. [2023-11-26 11:45:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-26 11:45:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:24,165 INFO L225 Difference]: With dead ends: 1339 [2023-11-26 11:45:24,165 INFO L226 Difference]: Without dead ends: 1339 [2023-11-26 11:45:24,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:24,167 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 405 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:24,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1260 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-26 11:45:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-11-26 11:45:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1133. [2023-11-26 11:45:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 606 states have (on average 2.298679867986799) internal successors, (1393), 1126 states have internal predecessors, (1393), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1411 transitions. [2023-11-26 11:45:24,211 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1411 transitions. Word has length 2 [2023-11-26 11:45:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:24,211 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1411 transitions. [2023-11-26 11:45:24,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1411 transitions. [2023-11-26 11:45:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:45:24,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:24,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:45:24,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 11:45:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:24,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:24,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -161541350, now seen corresponding path program 1 times [2023-11-26 11:45:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365831090] [2023-11-26 11:45:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:24,417 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 [2023-11-26 11:45:24,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:24,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:24,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:24,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:24,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 11:45:24,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:45:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:45:24,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 11:45:24,722 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 11:45:24,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 11:45:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:24,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:24,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365831090] [2023-11-26 11:45:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365831090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152315390] [2023-11-26 11:45:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:24,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:24,756 INFO L87 Difference]: Start difference. First operand 1133 states and 1411 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:28,341 INFO L93 Difference]: Finished difference Result 1136 states and 1416 transitions. [2023-11-26 11:45:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:45:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:28,349 INFO L225 Difference]: With dead ends: 1136 [2023-11-26 11:45:28,349 INFO L226 Difference]: Without dead ends: 1136 [2023-11-26 11:45:28,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:28,351 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 986 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:28,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 316 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-26 11:45:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-11-26 11:45:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 953. [2023-11-26 11:45:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 436 states have (on average 2.293577981651376) internal successors, (1000), 946 states have internal predecessors, (1000), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1018 transitions. [2023-11-26 11:45:28,380 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1018 transitions. Word has length 6 [2023-11-26 11:45:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:28,381 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1018 transitions. [2023-11-26 11:45:28,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1018 transitions. [2023-11-26 11:45:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:45:28,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:28,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:28,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:28,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:28,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:28,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -712814544, now seen corresponding path program 1 times [2023-11-26 11:45:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:28,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934571311] [2023-11-26 11:45:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:28,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:28,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 11:45:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:28,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:28,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934571311] [2023-11-26 11:45:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934571311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:28,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:28,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:28,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820801844] [2023-11-26 11:45:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:28,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:28,793 INFO L87 Difference]: Start difference. First operand 953 states and 1018 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:31,469 INFO L93 Difference]: Finished difference Result 1247 states and 1342 transitions. [2023-11-26 11:45:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 11:45:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:31,478 INFO L225 Difference]: With dead ends: 1247 [2023-11-26 11:45:31,478 INFO L226 Difference]: Without dead ends: 1247 [2023-11-26 11:45:31,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:31,480 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 895 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:31,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1003 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 11:45:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-11-26 11:45:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 904. [2023-11-26 11:45:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 436 states have (on average 2.1811926605504586) internal successors, (951), 897 states have internal predecessors, (951), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 969 transitions. [2023-11-26 11:45:31,510 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 969 transitions. Word has length 7 [2023-11-26 11:45:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:31,510 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 969 transitions. [2023-11-26 11:45:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 969 transitions. [2023-11-26 11:45:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:45:31,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:31,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:31,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-26 11:45:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:31,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:31,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash -712814543, now seen corresponding path program 1 times [2023-11-26 11:45:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753099459] [2023-11-26 11:45:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:31,716 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 [2023-11-26 11:45:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:31,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:31,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:31,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:31,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:31,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:45:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:31,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:31,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753099459] [2023-11-26 11:45:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753099459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:31,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725602076] [2023-11-26 11:45:31,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:31,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:31,912 INFO L87 Difference]: Start difference. First operand 904 states and 969 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:35,867 INFO L93 Difference]: Finished difference Result 1317 states and 1415 transitions. [2023-11-26 11:45:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:35,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 11:45:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:35,877 INFO L225 Difference]: With dead ends: 1317 [2023-11-26 11:45:35,878 INFO L226 Difference]: Without dead ends: 1317 [2023-11-26 11:45:35,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:35,879 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 613 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:35,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1326 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-26 11:45:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-11-26 11:45:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 917. [2023-11-26 11:45:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 459 states have (on average 2.1742919389978215) internal successors, (998), 910 states have internal predecessors, (998), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1016 transitions. [2023-11-26 11:45:35,914 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1016 transitions. Word has length 7 [2023-11-26 11:45:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:35,914 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1016 transitions. [2023-11-26 11:45:35,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1016 transitions. [2023-11-26 11:45:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:45:35,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:35,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:35,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:36,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:36,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:36,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1877374877, now seen corresponding path program 1 times [2023-11-26 11:45:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406816752] [2023-11-26 11:45:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:36,120 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 [2023-11-26 11:45:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:36,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:36,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:36,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:36,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:36,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:36,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406816752] [2023-11-26 11:45:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406816752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:36,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785971839] [2023-11-26 11:45:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:36,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:36,376 INFO L87 Difference]: Start difference. First operand 917 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:38,768 INFO L93 Difference]: Finished difference Result 1325 states and 1458 transitions. [2023-11-26 11:45:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:38,770 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-26 11:45:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:38,777 INFO L225 Difference]: With dead ends: 1325 [2023-11-26 11:45:38,777 INFO L226 Difference]: Without dead ends: 1325 [2023-11-26 11:45:38,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:38,779 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 497 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 2412 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 11:45:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-26 11:45:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1117. [2023-11-26 11:45:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 659 states have (on average 2.1441578148710168) internal successors, (1413), 1110 states have internal predecessors, (1413), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1431 transitions. [2023-11-26 11:45:38,815 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1431 transitions. Word has length 10 [2023-11-26 11:45:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:38,815 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1431 transitions. [2023-11-26 11:45:38,815 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1431 transitions. [2023-11-26 11:45:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:45:38,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:38,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:38,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-26 11:45:39,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:39,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr531ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1930922245, now seen corresponding path program 1 times [2023-11-26 11:45:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:39,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406280636] [2023-11-26 11:45:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:39,021 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 [2023-11-26 11:45:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:39,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:39,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:39,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:39,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:39,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:45:39,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:45:39,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:45:39,250 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 [2023-11-26 11:45:39,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:45:39,327 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 [2023-11-26 11:45:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:39,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:39,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406280636] [2023-11-26 11:45:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406280636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:39,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:39,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160311897] [2023-11-26 11:45:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:39,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:39,349 INFO L87 Difference]: Start difference. First operand 1117 states and 1431 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:41,810 INFO L93 Difference]: Finished difference Result 1955 states and 2372 transitions. [2023-11-26 11:45:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 11:45:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:41,821 INFO L225 Difference]: With dead ends: 1955 [2023-11-26 11:45:41,821 INFO L226 Difference]: Without dead ends: 1955 [2023-11-26 11:45:41,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:41,822 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 881 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:41,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2471 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:45:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2023-11-26 11:45:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1116. [2023-11-26 11:45:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 658 states have (on average 2.1443768996960486) internal successors, (1411), 1109 states have internal predecessors, (1411), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1429 transitions. [2023-11-26 11:45:41,860 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1429 transitions. Word has length 11 [2023-11-26 11:45:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:41,860 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1429 transitions. [2023-11-26 11:45:41,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1429 transitions. [2023-11-26 11:45:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:45:41,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:41,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:41,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:42,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:42,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash -566448857, now seen corresponding path program 1 times [2023-11-26 11:45:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469253236] [2023-11-26 11:45:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,068 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 [2023-11-26 11:45:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:42,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:42,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:42,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:42,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:42,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:42,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469253236] [2023-11-26 11:45:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469253236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:42,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936477467] [2023-11-26 11:45:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:42,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:42,276 INFO L87 Difference]: Start difference. First operand 1116 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:43,353 INFO L93 Difference]: Finished difference Result 1062 states and 1349 transitions. [2023-11-26 11:45:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:43,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 11:45:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:43,361 INFO L225 Difference]: With dead ends: 1062 [2023-11-26 11:45:43,361 INFO L226 Difference]: Without dead ends: 1062 [2023-11-26 11:45:43,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:43,362 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 70 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:43,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1545 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:45:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-11-26 11:45:43,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-11-26 11:45:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 628 states have (on average 2.1194267515923566) internal successors, (1331), 1055 states have internal predecessors, (1331), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1349 transitions. [2023-11-26 11:45:43,394 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1349 transitions. Word has length 15 [2023-11-26 11:45:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:43,394 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1349 transitions. [2023-11-26 11:45:43,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1349 transitions. [2023-11-26 11:45:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:45:43,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:43,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:43,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:43,601 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1103492545, now seen corresponding path program 1 times [2023-11-26 11:45:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382240318] [2023-11-26 11:45:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:43,602 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 [2023-11-26 11:45:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:43,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:43,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:43,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:43,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:43,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:43,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382240318] [2023-11-26 11:45:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382240318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147069307] [2023-11-26 11:45:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:43,866 INFO L87 Difference]: Start difference. First operand 1062 states and 1349 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:45,199 INFO L93 Difference]: Finished difference Result 1048 states and 1307 transitions. [2023-11-26 11:45:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 11:45:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:45,206 INFO L225 Difference]: With dead ends: 1048 [2023-11-26 11:45:45,206 INFO L226 Difference]: Without dead ends: 1048 [2023-11-26 11:45:45,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:45,209 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 58 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:45,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2274 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:45:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-11-26 11:45:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2023-11-26 11:45:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 626 states have (on average 2.0559105431309903) internal successors, (1287), 1039 states have internal predecessors, (1287), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1305 transitions. [2023-11-26 11:45:45,239 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1305 transitions. Word has length 17 [2023-11-26 11:45:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:45,239 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1305 transitions. [2023-11-26 11:45:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1305 transitions. [2023-11-26 11:45:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 11:45:45,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:45,241 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] [2023-11-26 11:45:45,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:45,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:45,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:45,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash 319557615, now seen corresponding path program 1 times [2023-11-26 11:45:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476589874] [2023-11-26 11:45:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:45,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:45,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:45,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:45,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:45,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:45,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 11:45:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:45,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:45,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476589874] [2023-11-26 11:45:45,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476589874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:45,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:45,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621580500] [2023-11-26 11:45:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:45,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:45,826 INFO L87 Difference]: Start difference. First operand 1046 states and 1305 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:49,020 INFO L93 Difference]: Finished difference Result 1448 states and 1829 transitions. [2023-11-26 11:45:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-26 11:45:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:49,029 INFO L225 Difference]: With dead ends: 1448 [2023-11-26 11:45:49,029 INFO L226 Difference]: Without dead ends: 1448 [2023-11-26 11:45:49,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:49,030 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 828 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:49,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1003 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 11:45:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-11-26 11:45:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1042. [2023-11-26 11:45:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 626 states have (on average 2.0431309904153356) internal successors, (1279), 1035 states have internal predecessors, (1279), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1297 transitions. [2023-11-26 11:45:49,065 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1297 transitions. Word has length 31 [2023-11-26 11:45:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:49,065 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1297 transitions. [2023-11-26 11:45:49,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1297 transitions. [2023-11-26 11:45:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 11:45:49,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:49,067 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] [2023-11-26 11:45:49,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:45:49,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-26 11:45:49,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 319557616, now seen corresponding path program 1 times [2023-11-26 11:45:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279327302] [2023-11-26 11:45:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:49,274 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 [2023-11-26 11:45:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:49,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:45:49,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12350cbc-4f01-49cb-999e-252fcf773cd4/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:45:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:49,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:45:49,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:49,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:45:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:49,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:49,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279327302] [2023-11-26 11:45:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279327302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220142452] [2023-11-26 11:45:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:49,858 INFO L87 Difference]: Start difference. First operand 1042 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)