./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ --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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:34:55,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:34:55,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 22:34:55,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:34:55,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:34:55,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:34:55,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:34:55,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:34:55,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:34:55,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:34:55,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:34:55,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:34:55,987 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:34:55,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:34:55,990 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:34:55,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:34:55,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:34:55,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:34:55,992 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:34:55,993 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:34:55,993 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:34:55,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:34:55,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:34:55,995 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:34:55,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:34:55,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:34:55,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:34:55,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:34:55,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:34:55,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:34:55,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:34:56,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:34:56,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:34:56,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:34:56,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:34:56,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:34:56,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:34:56,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:34:56,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:34:56,002 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_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2023-11-23 22:34:56,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:34:56,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:34:56,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:34:56,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:34:56,467 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:34:56,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2023-11-23 22:34:59,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:35:00,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:35:00,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2023-11-23 22:35:00,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/b5b52f725/46a4da9b36ab4c979885cfa5f77efc2f/FLAG161932c1f [2023-11-23 22:35:00,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/b5b52f725/46a4da9b36ab4c979885cfa5f77efc2f [2023-11-23 22:35:00,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:35:00,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:35:00,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:00,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:35:00,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:35:00,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:00" (1/1) ... [2023-11-23 22:35:00,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14dba33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:00, skipping insertion in model container [2023-11-23 22:35:00,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:00" (1/1) ... [2023-11-23 22:35:00,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:35:01,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:01,071 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) [2023-11-23 22:35:01,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78ded129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:01, skipping insertion in model container [2023-11-23 22:35:01,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:01,072 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 22:35:01,074 INFO L158 Benchmark]: Toolchain (without parser) took 897.78ms. Allocated memory is still 148.9MB. Free memory was 115.9MB in the beginning and 95.1MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 22:35:01,075 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 148.9MB. Free memory was 120.9MB in the beginning and 120.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:35:01,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 894.96ms. Allocated memory is still 148.9MB. Free memory was 115.3MB in the beginning and 95.1MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 22:35:01,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 148.9MB. Free memory was 120.9MB in the beginning and 120.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 894.96ms. Allocated memory is still 148.9MB. Free memory was 115.3MB in the beginning and 95.1MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ --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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:35:03,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:35:03,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-23 22:35:03,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:35:03,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:35:03,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:35:03,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:35:03,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:35:03,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:35:03,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:35:03,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:35:03,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:35:03,902 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:35:03,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:35:03,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:35:03,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:35:03,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:35:03,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:35:03,907 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:35:03,907 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:35:03,908 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:35:03,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:35:03,909 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:35:03,910 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 22:35:03,911 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 22:35:03,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:35:03,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:35:03,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:35:03,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:35:03,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:35:03,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:35:03,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:35:03,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:35:03,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:35:03,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:35:03,917 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 22:35:03,918 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 22:35:03,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:35:03,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:35:03,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:35:03,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:35:03,920 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 22:35:03,921 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_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2023-11-23 22:35:04,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:35:04,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:35:04,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:35:04,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:35:04,409 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:35:04,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2023-11-23 22:35:07,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:35:08,108 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:35:08,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2023-11-23 22:35:08,129 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/e48711c0f/377e1913c3c04b9b977225bcd51622b6/FLAGe994d7cf4 [2023-11-23 22:35:08,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/data/e48711c0f/377e1913c3c04b9b977225bcd51622b6 [2023-11-23 22:35:08,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:35:08,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:35:08,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:08,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:35:08,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:35:08,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:08" (1/1) ... [2023-11-23 22:35:08,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af47d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:08, skipping insertion in model container [2023-11-23 22:35:08,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:08" (1/1) ... [2023-11-23 22:35:08,226 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:35:08,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:08,961 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 22:35:09,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:35:09,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:09,159 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:35:09,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:09,321 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:35:09,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09 WrapperNode [2023-11-23 22:35:09,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:09,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:09,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:35:09,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:35:09,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,539 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1173 [2023-11-23 22:35:09,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:09,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:35:09,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:35:09,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:35:09,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:35:09,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:35:09,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:35:09,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:35:09,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (1/1) ... [2023-11-23 22:35:09,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:35:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:09,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:09,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:35:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 22:35:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 22:35:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 22:35:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 22:35:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 22:35:09,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 22:35:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:35:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:35:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:35:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 22:35:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 22:35:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:35:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 22:35:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 22:35:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:35:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:35:09,993 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:35:09,995 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:35:09,999 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 22:35:15,847 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:35:16,144 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:35:16,144 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-23 22:35:16,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16 BoogieIcfgContainer [2023-11-23 22:35:16,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:35:16,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:35:16,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:35:16,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:35:16,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:08" (1/3) ... [2023-11-23 22:35:16,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7782f29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2023-11-23 22:35:16,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:09" (2/3) ... [2023-11-23 22:35:16,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7782f29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2023-11-23 22:35:16,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16" (3/3) ... [2023-11-23 22:35:16,160 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2023-11-23 22:35:16,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:35:16,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2023-11-23 22:35:16,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:35:16,290 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;@59fde378, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:35:16,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2023-11-23 22:35:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1157 states, 496 states have (on average 2.5524193548387095) internal successors, (1266), 1148 states have internal predecessors, (1266), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 22:35:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:16,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 22:35:16,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:16,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash 61001145, now seen corresponding path program 1 times [2023-11-23 22:35:16,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304621140] [2023-11-23 22:35:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:16,334 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 [2023-11-23 22:35:16,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:16,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:16,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:16,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 22:35:16,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:16,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:16,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304621140] [2023-11-23 22:35:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304621140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:16,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:35:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560290570] [2023-11-23 22:35:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:16,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:35:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:35:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:35:16,607 INFO L87 Difference]: Start difference. First operand has 1157 states, 496 states have (on average 2.5524193548387095) internal successors, (1266), 1148 states have internal predecessors, (1266), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-23 22:35:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:17,714 INFO L93 Difference]: Finished difference Result 1138 states and 1210 transitions. [2023-11-23 22:35:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:35:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-23 22:35:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:17,765 INFO L225 Difference]: With dead ends: 1138 [2023-11-23 22:35:17,769 INFO L226 Difference]: Without dead ends: 1137 [2023-11-23 22:35:17,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:35:17,779 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1085 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 22:35:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-23 22:35:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2023-11-23 22:35:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 487 states have (on average 2.4168377823408624) internal successors, (1177), 1128 states have internal predecessors, (1177), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1209 transitions. [2023-11-23 22:35:17,944 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1209 transitions. Word has length 4 [2023-11-23 22:35:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1209 transitions. [2023-11-23 22:35:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-23 22:35:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1209 transitions. [2023-11-23 22:35:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 22:35:17,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:17,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 22:35:17,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:18,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:18,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:18,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 61001207, now seen corresponding path program 1 times [2023-11-23 22:35:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913920266] [2023-11-23 22:35:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:18,152 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 [2023-11-23 22:35:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:18,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:18,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:18,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:35:18,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:18,442 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 [2023-11-23 22:35:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:18,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:18,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913920266] [2023-11-23 22:35:18,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913920266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:18,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:35:18,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261484255] [2023-11-23 22:35:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:35:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:35:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:18,477 INFO L87 Difference]: Start difference. First operand 1137 states and 1209 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-23 22:35:21,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:21,547 INFO L93 Difference]: Finished difference Result 1167 states and 1252 transitions. [2023-11-23 22:35:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:35:21,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-23 22:35:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:21,555 INFO L225 Difference]: With dead ends: 1167 [2023-11-23 22:35:21,555 INFO L226 Difference]: Without dead ends: 1167 [2023-11-23 22:35:21,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:21,557 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1042 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:21,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 576 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 22:35:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-11-23 22:35:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1110. [2023-11-23 22:35:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 553 states have (on average 2.18625678119349) internal successors, (1209), 1101 states have internal predecessors, (1209), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1241 transitions. [2023-11-23 22:35:21,594 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1241 transitions. Word has length 4 [2023-11-23 22:35:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:21,594 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1241 transitions. [2023-11-23 22:35:21,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-23 22:35:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1241 transitions. [2023-11-23 22:35:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 22:35:21,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:21,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 22:35:21,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:21,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:21,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash 61001208, now seen corresponding path program 1 times [2023-11-23 22:35:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:21,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066309143] [2023-11-23 22:35:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:21,802 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 [2023-11-23 22:35:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:21,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:21,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:21,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:35:21,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:21,955 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 [2023-11-23 22:35:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:21,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:21,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:21,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066309143] [2023-11-23 22:35:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066309143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:21,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:35:21,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017262874] [2023-11-23 22:35:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:35:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:35:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:21,989 INFO L87 Difference]: Start difference. First operand 1110 states and 1241 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-23 22:35:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:27,037 INFO L93 Difference]: Finished difference Result 1382 states and 1533 transitions. [2023-11-23 22:35:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:35:27,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-23 22:35:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:27,047 INFO L225 Difference]: With dead ends: 1382 [2023-11-23 22:35:27,047 INFO L226 Difference]: Without dead ends: 1382 [2023-11-23 22:35:27,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:27,049 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 456 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:27,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1198 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-23 22:35:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-11-23 22:35:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1233. [2023-11-23 22:35:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 686 states have (on average 2.1603498542274053) internal successors, (1482), 1224 states have internal predecessors, (1482), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1514 transitions. [2023-11-23 22:35:27,093 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1514 transitions. Word has length 4 [2023-11-23 22:35:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:27,093 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1514 transitions. [2023-11-23 22:35:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-23 22:35:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1514 transitions. [2023-11-23 22:35:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 22:35:27,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:27,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:35:27,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:27,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:27,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1892728683, now seen corresponding path program 1 times [2023-11-23 22:35:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712898974] [2023-11-23 22:35:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:27,302 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 [2023-11-23 22:35:27,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:27,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:27,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:27,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:35:27,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:27,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:27,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712898974] [2023-11-23 22:35:27,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712898974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:35:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112135991] [2023-11-23 22:35:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:27,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:35:27,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:35:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:27,450 INFO L87 Difference]: Start difference. First operand 1233 states and 1514 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:35:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:29,411 INFO L93 Difference]: Finished difference Result 2422 states and 2964 transitions. [2023-11-23 22:35:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:35:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 22:35:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:29,432 INFO L225 Difference]: With dead ends: 2422 [2023-11-23 22:35:29,432 INFO L226 Difference]: Without dead ends: 2422 [2023-11-23 22:35:29,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:29,435 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 1029 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:29,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1959 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 22:35:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2023-11-23 22:35:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1234. [2023-11-23 22:35:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 687 states have (on average 2.158660844250364) internal successors, (1483), 1225 states have internal predecessors, (1483), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1515 transitions. [2023-11-23 22:35:29,485 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1515 transitions. Word has length 5 [2023-11-23 22:35:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:29,486 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1515 transitions. [2023-11-23 22:35:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:35:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1515 transitions. [2023-11-23 22:35:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 22:35:29,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:29,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:29,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:29,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:29,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:29,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1471275871, now seen corresponding path program 1 times [2023-11-23 22:35:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863907908] [2023-11-23 22:35:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:29,694 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 [2023-11-23 22:35:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:29,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:29,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:29,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:35:29,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:29,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:29,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:29,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863907908] [2023-11-23 22:35:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863907908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:29,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:29,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:35:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82280784] [2023-11-23 22:35:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:35:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:35:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:29,911 INFO L87 Difference]: Start difference. First operand 1234 states and 1515 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) 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) [2023-11-23 22:35:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:31,317 INFO L93 Difference]: Finished difference Result 1195 states and 1475 transitions. [2023-11-23 22:35:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:35:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 [2023-11-23 22:35:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:31,335 INFO L225 Difference]: With dead ends: 1195 [2023-11-23 22:35:31,343 INFO L226 Difference]: Without dead ends: 1195 [2023-11-23 22:35:31,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:31,345 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 70 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:31,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1817 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 22:35:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-11-23 22:35:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2023-11-23 22:35:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 672 states have (on average 2.1473214285714284) internal successors, (1443), 1186 states have internal predecessors, (1443), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1475 transitions. [2023-11-23 22:35:31,420 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1475 transitions. Word has length 10 [2023-11-23 22:35:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:31,421 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1475 transitions. [2023-11-23 22:35:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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) [2023-11-23 22:35:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1475 transitions. [2023-11-23 22:35:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 22:35:31,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:31,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:31,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:31,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:31,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash -851875813, now seen corresponding path program 1 times [2023-11-23 22:35:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988984290] [2023-11-23 22:35:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:31,639 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 [2023-11-23 22:35:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:31,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:31,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:31,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:35:31,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:31,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:31,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988984290] [2023-11-23 22:35:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988984290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:35:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28813869] [2023-11-23 22:35:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:35:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:35:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:35:31,842 INFO L87 Difference]: Start difference. First operand 1195 states and 1475 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-23 22:35:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:33,471 INFO L93 Difference]: Finished difference Result 1181 states and 1454 transitions. [2023-11-23 22:35:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:35:33,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-23 22:35:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:33,478 INFO L225 Difference]: With dead ends: 1181 [2023-11-23 22:35:33,478 INFO L226 Difference]: Without dead ends: 1181 [2023-11-23 22:35:33,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:35:33,480 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 58 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:33,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2682 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 22:35:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-11-23 22:35:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1180. [2023-11-23 22:35:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 671 states have (on average 2.1177347242921014) internal successors, (1421), 1171 states have internal predecessors, (1421), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1453 transitions. [2023-11-23 22:35:33,512 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1453 transitions. Word has length 12 [2023-11-23 22:35:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:33,513 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1453 transitions. [2023-11-23 22:35:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-23 22:35:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1453 transitions. [2023-11-23 22:35:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 22:35:33,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:33,514 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] [2023-11-23 22:35:33,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:33,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:33,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1100253591, now seen corresponding path program 1 times [2023-11-23 22:35:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415224789] [2023-11-23 22:35:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:33,720 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 [2023-11-23 22:35:33,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:33,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:33,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:33,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:35:33,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:33,929 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 [2023-11-23 22:35:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:34,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:34,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415224789] [2023-11-23 22:35:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415224789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:34,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:34,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:35:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769690967] [2023-11-23 22:35:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:34,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:35:34,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:35:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:35:34,052 INFO L87 Difference]: Start difference. First operand 1180 states and 1453 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-23 22:35:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:37,795 INFO L93 Difference]: Finished difference Result 1233 states and 1460 transitions. [2023-11-23 22:35:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:35:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-23 22:35:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:37,802 INFO L225 Difference]: With dead ends: 1233 [2023-11-23 22:35:37,803 INFO L226 Difference]: Without dead ends: 1233 [2023-11-23 22:35:37,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:35:37,805 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 977 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:37,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 913 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 22:35:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-11-23 22:35:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1176. [2023-11-23 22:35:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 671 states have (on average 2.1117734724292103) internal successors, (1417), 1167 states have internal predecessors, (1417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1449 transitions. [2023-11-23 22:35:37,835 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1449 transitions. Word has length 26 [2023-11-23 22:35:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:37,836 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1449 transitions. [2023-11-23 22:35:37,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-23 22:35:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1449 transitions. [2023-11-23 22:35:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 22:35:37,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:37,838 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] [2023-11-23 22:35:37,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:38,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:38,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:38,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1100253590, now seen corresponding path program 1 times [2023-11-23 22:35:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837737082] [2023-11-23 22:35:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:38,045 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 [2023-11-23 22:35:38,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:38,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:38,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:38,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:35:38,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:38,227 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 [2023-11-23 22:35:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:38,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:38,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837737082] [2023-11-23 22:35:38,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837737082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:38,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:35:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150738417] [2023-11-23 22:35:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:35:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:35:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:35:38,477 INFO L87 Difference]: Start difference. First operand 1176 states and 1449 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-23 22:35:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:43,483 INFO L93 Difference]: Finished difference Result 1321 states and 1464 transitions. [2023-11-23 22:35:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:35:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-23 22:35:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:43,491 INFO L225 Difference]: With dead ends: 1321 [2023-11-23 22:35:43,491 INFO L226 Difference]: Without dead ends: 1321 [2023-11-23 22:35:43,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:35:43,492 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 393 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:43,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1577 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 22:35:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-11-23 22:35:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1172. [2023-11-23 22:35:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 671 states have (on average 2.105812220566319) internal successors, (1413), 1163 states have internal predecessors, (1413), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1445 transitions. [2023-11-23 22:35:43,522 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1445 transitions. Word has length 26 [2023-11-23 22:35:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:43,523 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1445 transitions. [2023-11-23 22:35:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-23 22:35:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1445 transitions. [2023-11-23 22:35:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 22:35:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:43,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:43,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:43,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:43,729 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:43,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -147891997, now seen corresponding path program 1 times [2023-11-23 22:35:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261174845] [2023-11-23 22:35:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:43,730 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 [2023-11-23 22:35:43,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:43,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:43,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:43,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:35:43,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:44,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:44,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261174845] [2023-11-23 22:35:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261174845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:35:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655446164] [2023-11-23 22:35:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:35:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:35:44,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:35:44,074 INFO L87 Difference]: Start difference. First operand 1172 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-23 22:35:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:45,781 INFO L93 Difference]: Finished difference Result 1166 states and 1435 transitions. [2023-11-23 22:35:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:35:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2023-11-23 22:35:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:45,790 INFO L225 Difference]: With dead ends: 1166 [2023-11-23 22:35:45,790 INFO L226 Difference]: Without dead ends: 1166 [2023-11-23 22:35:45,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:35:45,790 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 23 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:45,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2668 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 22:35:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-11-23 22:35:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2023-11-23 22:35:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 665 states have (on average 2.1097744360902255) internal successors, (1403), 1157 states have internal predecessors, (1403), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1435 transitions. [2023-11-23 22:35:45,818 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1435 transitions. Word has length 42 [2023-11-23 22:35:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:45,819 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1435 transitions. [2023-11-23 22:35:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-23 22:35:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1435 transitions. [2023-11-23 22:35:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 22:35:45,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:45,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:45,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-23 22:35:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:46,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:46,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1961428099, now seen corresponding path program 1 times [2023-11-23 22:35:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336662895] [2023-11-23 22:35:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:46,026 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 [2023-11-23 22:35:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:46,027 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:46,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:46,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:35:46,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:46,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:35:46,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:35:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336662895] [2023-11-23 22:35:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336662895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:46,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:35:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924069454] [2023-11-23 22:35:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:35:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:35:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:35:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:46,600 INFO L87 Difference]: Start difference. First operand 1166 states and 1435 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:35:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:47,828 INFO L93 Difference]: Finished difference Result 1209 states and 1478 transitions. [2023-11-23 22:35:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:35:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2023-11-23 22:35:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:35:47,836 INFO L225 Difference]: With dead ends: 1209 [2023-11-23 22:35:47,836 INFO L226 Difference]: Without dead ends: 1209 [2023-11-23 22:35:47,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:35:47,837 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 59 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:35:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1744 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:35:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-11-23 22:35:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2023-11-23 22:35:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 708 states have (on average 2.042372881355932) internal successors, (1446), 1200 states have internal predecessors, (1446), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 22:35:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1478 transitions. [2023-11-23 22:35:47,865 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1478 transitions. Word has length 46 [2023-11-23 22:35:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:35:47,866 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1478 transitions. [2023-11-23 22:35:47,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:35:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1478 transitions. [2023-11-23 22:35:47,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 22:35:47,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:35:47,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:47,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:35:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:35:48,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-23 22:35:48,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash -233046541, now seen corresponding path program 1 times [2023-11-23 22:35:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:35:48,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517457021] [2023-11-23 22:35:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:48,075 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 [2023-11-23 22:35:48,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:35:48,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:35:48,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c123b6-ca30-4c2f-9290-64cdd755e097/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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