./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/touch-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/touch-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya --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 64bit --witnessprinter.graph.data.programhash 3b999e0c8863a6185ab353b93e4a13998fea5fc296976dddb4afe11519346af5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:16:44,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:16:44,926 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-29 02:16:44,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:16:44,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:16:44,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:16:44,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:16:44,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:16:44,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:16:44,956 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:16:44,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:16:44,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:16:44,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:16:44,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:16:44,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:16:44,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:16:44,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:16:44,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:16:44,961 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 02:16:44,961 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 02:16:44,962 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 02:16:44,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:16:44,963 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:16:44,963 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:16:44,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:16:44,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:16:44,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:16:44,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:16:44,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:16:44,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:16:44,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:16:44,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:16:44,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:16:44,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:16:44,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:16:44,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:16:44,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:16:44,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:16:44,976 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_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b999e0c8863a6185ab353b93e4a13998fea5fc296976dddb4afe11519346af5 [2023-11-29 02:16:45,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:16:45,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:16:45,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:16:45,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:16:45,227 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:16:45,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/busybox-1.22.0/touch-2.i [2023-11-29 02:16:47,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:16:48,342 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:16:48,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/sv-benchmarks/c/busybox-1.22.0/touch-2.i [2023-11-29 02:16:48,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/3162d5388/36498b953b11421a9bb2b88550c581ab/FLAGb1aa71eb5 [2023-11-29 02:16:48,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/3162d5388/36498b953b11421a9bb2b88550c581ab [2023-11-29 02:16:48,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:16:48,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:16:48,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:48,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:16:48,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:16:48,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:48" (1/1) ... [2023-11-29 02:16:48,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffc90d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:48, skipping insertion in model container [2023-11-29 02:16:48,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:48" (1/1) ... [2023-11-29 02:16:48,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:16:50,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:50,077 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) [2023-11-29 02:16:50,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@732db985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:50, skipping insertion in model container [2023-11-29 02:16:50,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:50,078 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 02:16:50,080 INFO L158 Benchmark]: Toolchain (without parser) took 1687.46ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 97.7MB in the beginning and 133.6MB in the end (delta: -35.9MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-11-29 02:16:50,081 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 112.0MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:16:50,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1685.28ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 97.7MB in the beginning and 133.6MB in the end (delta: -35.9MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-11-29 02:16:50,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 112.0MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1685.28ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 97.7MB in the beginning and 133.6MB in the end (delta: -35.9MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2550]: 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_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/touch-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya --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 64bit --witnessprinter.graph.data.programhash 3b999e0c8863a6185ab353b93e4a13998fea5fc296976dddb4afe11519346af5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:16:51,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:16:51,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-29 02:16:51,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:16:51,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:16:51,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:16:51,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:16:51,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:16:51,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:16:51,969 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:16:51,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:16:51,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:16:51,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:16:51,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:16:51,971 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:16:51,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:16:51,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:16:51,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:16:51,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 02:16:51,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 02:16:51,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 02:16:51,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:16:51,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:16:51,976 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:16:51,976 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:16:51,976 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:16:51,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:16:51,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:16:51,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:16:51,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:16:51,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:16:51,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:16:51,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:16:51,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:16:51,979 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:16:51,980 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:16:51,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:16:51,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:16:51,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:16:51,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:16:51,981 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:16:51,981 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_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b999e0c8863a6185ab353b93e4a13998fea5fc296976dddb4afe11519346af5 [2023-11-29 02:16:52,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:16:52,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:16:52,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:16:52,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:16:52,287 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:16:52,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/busybox-1.22.0/touch-2.i [2023-11-29 02:16:55,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:16:55,470 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:16:55,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/sv-benchmarks/c/busybox-1.22.0/touch-2.i [2023-11-29 02:16:55,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/167ee5702/b09d4c91144a4549be0d4ff9e40a1f14/FLAG0bffe0e96 [2023-11-29 02:16:55,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/data/167ee5702/b09d4c91144a4549be0d4ff9e40a1f14 [2023-11-29 02:16:55,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:16:55,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:16:55,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:55,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:16:55,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:16:55,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:55" (1/1) ... [2023-11-29 02:16:55,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a92264b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:55, skipping insertion in model container [2023-11-29 02:16:55,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:55" (1/1) ... [2023-11-29 02:16:55,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:16:57,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:57,049 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 02:16:57,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:16:57,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:57,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:16:57,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:57,652 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,652 WARN L675 CHandler]: The function localtime is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,652 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,652 WARN L675 CHandler]: The function mktime is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,653 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,653 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,653 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,653 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,654 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:16:57,661 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:16:57,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57 WrapperNode [2023-11-29 02:16:57,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:57,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:57,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:16:57,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:16:57,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,836 INFO L138 Inliner]: procedures = 683, calls = 747, calls flagged for inlining = 38, calls inlined = 37, statements flattened = 2411 [2023-11-29 02:16:57,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:57,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:16:57,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:16:57,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:16:57,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,879 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-29 02:16:57,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:57,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:58,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:16:58,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:16:58,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:16:58,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:16:58,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (1/1) ... [2023-11-29 02:16:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:16:58,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:58,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:58,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:16:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-29 02:16:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2023-11-29 02:16:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-29 02:16:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:16:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-29 02:16:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-29 02:16:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-29 02:16:58,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-29 02:16:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-29 02:16:58,090 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-29 02:16:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-29 02:16:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-29 02:16:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-29 02:16:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-29 02:16:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure utimes [2023-11-29 02:16:58,092 INFO L138 BoogieDeclarations]: Found implementation of procedure utimes [2023-11-29 02:16:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-29 02:16:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:16:58,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:16:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-29 02:16:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-29 02:16:58,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-29 02:16:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-29 02:16:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-29 02:16:58,093 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-29 02:16:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-29 02:16:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-29 02:16:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-29 02:16:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:16:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-29 02:16:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-29 02:16:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 02:16:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-29 02:16:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-29 02:16:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-29 02:16:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-29 02:16:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-29 02:16:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-29 02:16:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-29 02:16:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-29 02:16:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-29 02:16:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-29 02:16:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-29 02:16:58,098 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-29 02:16:58,579 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:16:58,580 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:16:59,713 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 02:17:16,781 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:17:17,058 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:17:17,058 INFO L309 CfgBuilder]: Removed 27 assume(true) statements. [2023-11-29 02:17:17,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:17:17 BoogieIcfgContainer [2023-11-29 02:17:17,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:17:17,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:17:17,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:17:17,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:17:17,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:16:55" (1/3) ... [2023-11-29 02:17:17,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec2212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:17:17, skipping insertion in model container [2023-11-29 02:17:17,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:57" (2/3) ... [2023-11-29 02:17:17,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec2212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:17:17, skipping insertion in model container [2023-11-29 02:17:17,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:17:17" (3/3) ... [2023-11-29 02:17:17,069 INFO L112 eAbstractionObserver]: Analyzing ICFG touch-2.i [2023-11-29 02:17:17,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:17:17,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 913 error locations. [2023-11-29 02:17:17,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:17:17,195 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;@7d50fcd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:17:17,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 913 error locations. [2023-11-29 02:17:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 1830 states, 850 states have (on average 2.3517647058823528) internal successors, (1999), 1762 states have internal predecessors, (1999), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-29 02:17:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 02:17:17,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:17,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 02:17:17,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:17:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 108320, now seen corresponding path program 1 times [2023-11-29 02:17:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:17:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100911157] [2023-11-29 02:17:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:17,236 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 [2023-11-29 02:17:17,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:17:17,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:17:17,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:17:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:17,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:17,726 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 [2023-11-29 02:17:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:17,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:17,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:17:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100911157] [2023-11-29 02:17:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100911157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:17,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:17:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553935872] [2023-11-29 02:17:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:17:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:17:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:17:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:17,778 INFO L87 Difference]: Start difference. First operand has 1830 states, 850 states have (on average 2.3517647058823528) internal successors, (1999), 1762 states have internal predecessors, (1999), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:26,991 INFO L93 Difference]: Finished difference Result 1963 states and 2232 transitions. [2023-11-29 02:17:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:17:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-29 02:17:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:27,015 INFO L225 Difference]: With dead ends: 1963 [2023-11-29 02:17:27,015 INFO L226 Difference]: Without dead ends: 1962 [2023-11-29 02:17:27,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:27,019 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 383 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:27,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2643 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 02:17:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2023-11-29 02:17:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1807. [2023-11-29 02:17:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 837 states have (on average 2.3189964157706093) internal successors, (1941), 1749 states have internal predecessors, (1941), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 02:17:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2045 transitions. [2023-11-29 02:17:27,124 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2045 transitions. Word has length 2 [2023-11-29 02:17:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:27,124 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 2045 transitions. [2023-11-29 02:17:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2045 transitions. [2023-11-29 02:17:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 02:17:27,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:27,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 02:17:27,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:17:27,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:17:27,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:17:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 108321, now seen corresponding path program 1 times [2023-11-29 02:17:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:17:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644070628] [2023-11-29 02:17:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:27,329 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 [2023-11-29 02:17:27,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:17:27,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:17:27,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:17:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:17:27,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:27,652 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 [2023-11-29 02:17:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:27,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:27,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:17:27,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644070628] [2023-11-29 02:17:27,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644070628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:27,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:17:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388249603] [2023-11-29 02:17:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:17:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:17:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:17:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:27,677 INFO L87 Difference]: Start difference. First operand 1807 states and 2045 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:40,584 INFO L93 Difference]: Finished difference Result 1806 states and 2044 transitions. [2023-11-29 02:17:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:17:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-29 02:17:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:40,595 INFO L225 Difference]: With dead ends: 1806 [2023-11-29 02:17:40,595 INFO L226 Difference]: Without dead ends: 1806 [2023-11-29 02:17:40,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:40,597 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 9 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:40,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2907 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-11-29 02:17:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2023-11-29 02:17:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2023-11-29 02:17:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 837 states have (on average 2.3178016726403823) internal successors, (1940), 1748 states have internal predecessors, (1940), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 02:17:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2044 transitions. [2023-11-29 02:17:40,650 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2044 transitions. Word has length 2 [2023-11-29 02:17:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:40,651 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2044 transitions. [2023-11-29 02:17:40,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2044 transitions. [2023-11-29 02:17:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 02:17:40,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:40,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 02:17:40,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 02:17:40,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:17:40,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:17:40,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash 106921902, now seen corresponding path program 1 times [2023-11-29 02:17:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:17:40,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552880089] [2023-11-29 02:17:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:17:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:17:40,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:17:40,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:17:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:41,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:17:41,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:41,199 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 [2023-11-29 02:17:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:41,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:41,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:17:41,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552880089] [2023-11-29 02:17:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552880089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:41,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:17:41,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492537674] [2023-11-29 02:17:41,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:41,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:17:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:17:41,286 INFO L87 Difference]: Start difference. First operand 1806 states and 2044 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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) [2023-11-29 02:17:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:54,052 INFO L93 Difference]: Finished difference Result 1808 states and 2046 transitions. [2023-11-29 02:17:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:17:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2023-11-29 02:17:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:54,063 INFO L225 Difference]: With dead ends: 1808 [2023-11-29 02:17:54,063 INFO L226 Difference]: Without dead ends: 1808 [2023-11-29 02:17:54,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:17:54,071 INFO L413 NwaCegarLoop]: 1811 mSDtfsCounter, 9 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:54,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2907 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-11-29 02:17:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-11-29 02:17:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1808. [2023-11-29 02:17:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 839 states have (on average 2.3146603098927296) internal successors, (1942), 1750 states have internal predecessors, (1942), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 02:17:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2046 transitions. [2023-11-29 02:17:54,135 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2046 transitions. Word has length 4 [2023-11-29 02:17:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2046 transitions. [2023-11-29 02:17:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2023-11-29 02:17:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2046 transitions. [2023-11-29 02:17:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 02:17:54,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:54,137 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:17:54,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 02:17:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:17:54,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:17:54,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -324449549, now seen corresponding path program 1 times [2023-11-29 02:17:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:17:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526395432] [2023-11-29 02:17:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:54,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:17:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:17:54,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:17:54,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:17:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:54,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:17:54,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:54,717 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 [2023-11-29 02:17:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:54,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:17:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:55,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:17:55,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526395432] [2023-11-29 02:17:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526395432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:17:55,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:17:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-29 02:17:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144635966] [2023-11-29 02:17:55,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:17:55,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:17:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:17:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:17:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:17:55,470 INFO L87 Difference]: Start difference. First operand 1808 states and 2046 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2023-11-29 02:18:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:56,084 INFO L93 Difference]: Finished difference Result 1810 states and 2048 transitions. [2023-11-29 02:18:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:18:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 6 [2023-11-29 02:18:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:56,094 INFO L225 Difference]: With dead ends: 1810 [2023-11-29 02:18:56,094 INFO L226 Difference]: Without dead ends: 1810 [2023-11-29 02:18:56,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:56,096 INFO L413 NwaCegarLoop]: 1810 mSDtfsCounter, 10 mSDsluCounter, 6574 mSDsCounter, 0 mSdLazyCounter, 5893 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8384 SdHoareTripleChecker+Invalid, 5897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:56,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8384 Invalid, 5897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 5893 Invalid, 0 Unknown, 0 Unchecked, 60.3s Time] [2023-11-29 02:18:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2023-11-29 02:18:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2023-11-29 02:18:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 842 states have (on average 2.308788598574822) internal successors, (1944), 1752 states have internal predecessors, (1944), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 02:18:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2048 transitions. [2023-11-29 02:18:56,126 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2048 transitions. Word has length 6 [2023-11-29 02:18:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:56,127 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 2048 transitions. [2023-11-29 02:18:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2023-11-29 02:18:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2048 transitions. [2023-11-29 02:18:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 02:18:56,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:56,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-29 02:18:56,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 02:18:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:18:56,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:18:56,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash 182008165, now seen corresponding path program 1 times [2023-11-29 02:18:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:18:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395608687] [2023-11-29 02:18:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:56,330 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 [2023-11-29 02:18:56,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:18:56,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:18:56,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:18:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:56,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:18:56,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:56,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:18:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:56,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:18:56,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395608687] [2023-11-29 02:18:56,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395608687] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:18:56,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:18:56,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:18:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171302180] [2023-11-29 02:18:56,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:18:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:18:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:18:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:18:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:56,863 INFO L87 Difference]: Start difference. First operand 1810 states and 2048 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-29 02:19:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:08,957 INFO L93 Difference]: Finished difference Result 1820 states and 2058 transitions. [2023-11-29 02:19:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:19:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 02:19:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:08,965 INFO L225 Difference]: With dead ends: 1820 [2023-11-29 02:19:08,965 INFO L226 Difference]: Without dead ends: 1820 [2023-11-29 02:19:08,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:19:08,966 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 5 mSDsluCounter, 10872 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12686 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:08,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12686 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-11-29 02:19:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2023-11-29 02:19:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2023-11-29 02:19:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 852 states have (on average 2.2934272300469485) internal successors, (1954), 1762 states have internal predecessors, (1954), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 02:19:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2058 transitions. [2023-11-29 02:19:08,998 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2058 transitions. Word has length 11 [2023-11-29 02:19:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:08,998 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2058 transitions. [2023-11-29 02:19:08,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-29 02:19:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2058 transitions. [2023-11-29 02:19:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 02:19:08,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:08,999 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-29 02:19:09,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 02:19:09,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:09,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:19:09,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1879167124, now seen corresponding path program 2 times [2023-11-29 02:19:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:19:09,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254233028] [2023-11-29 02:19:09,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:19:09,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:09,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:19:09,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:19:09,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:19:09,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:19:09,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:19:09,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:19:09,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:09,730 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 02:19:09,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 02:19:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 02:19:10,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:19:10,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:19:10,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254233028] [2023-11-29 02:19:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254233028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:19:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128256908] [2023-11-29 02:19:10,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:10,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:19:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:10,123 INFO L87 Difference]: Start difference. First operand 1820 states and 2058 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:29,610 INFO L93 Difference]: Finished difference Result 2174 states and 2472 transitions. [2023-11-29 02:19:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:19:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 02:19:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:29,621 INFO L225 Difference]: With dead ends: 2174 [2023-11-29 02:19:29,621 INFO L226 Difference]: Without dead ends: 2174 [2023-11-29 02:19:29,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:29,622 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 602 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:29,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 2622 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2023-11-29 02:19:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2023-11-29 02:19:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2000. [2023-11-29 02:19:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1022 states have (on average 2.2788649706457926) internal successors, (2329), 1931 states have internal predecessors, (2329), 65 states have call successors, (65), 17 states have call predecessors, (65), 13 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:19:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2448 transitions. [2023-11-29 02:19:29,660 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2448 transitions. Word has length 21 [2023-11-29 02:19:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:29,661 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 2448 transitions. [2023-11-29 02:19:29,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2448 transitions. [2023-11-29 02:19:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 02:19:29,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:29,662 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-29 02:19:29,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 02:19:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:29,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:19:29,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1879167123, now seen corresponding path program 1 times [2023-11-29 02:19:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:19:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59994416] [2023-11-29 02:19:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:29,867 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 [2023-11-29 02:19:29,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:19:29,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:19:29,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:19:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:30,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:19:30,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:30,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:31,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:19:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59994416] [2023-11-29 02:19:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59994416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:19:31,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:19:31,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 02:19:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544254180] [2023-11-29 02:19:31,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:19:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 02:19:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:19:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:19:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:19:31,049 INFO L87 Difference]: Start difference. First operand 2000 states and 2448 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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) [2023-11-29 02:19:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:51,885 INFO L93 Difference]: Finished difference Result 2004 states and 2452 transitions. [2023-11-29 02:19:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:19:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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 21 [2023-11-29 02:19:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:51,896 INFO L225 Difference]: With dead ends: 2004 [2023-11-29 02:19:51,896 INFO L226 Difference]: Without dead ends: 2004 [2023-11-29 02:19:51,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:19:51,897 INFO L413 NwaCegarLoop]: 1813 mSDtfsCounter, 3 mSDsluCounter, 19921 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21734 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:51,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21734 Invalid, 2915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2914 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2023-11-29 02:19:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-11-29 02:19:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 2004. [2023-11-29 02:19:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1026 states have (on average 2.2738791423001947) internal successors, (2333), 1935 states have internal predecessors, (2333), 65 states have call successors, (65), 17 states have call predecessors, (65), 13 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:19:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2452 transitions. [2023-11-29 02:19:51,949 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2452 transitions. Word has length 21 [2023-11-29 02:19:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:51,949 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 2452 transitions. [2023-11-29 02:19:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 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) [2023-11-29 02:19:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2452 transitions. [2023-11-29 02:19:51,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 02:19:51,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:51,950 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2023-11-29 02:19:51,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 02:19:52,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:52,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:19:52,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -852962461, now seen corresponding path program 2 times [2023-11-29 02:19:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:19:52,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303388705] [2023-11-29 02:19:52,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:19:52,170 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 [2023-11-29 02:19:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:19:52,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:19:52,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:19:52,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:19:52,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:19:52,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:19:52,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:19:52,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 02:19:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:19:53,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:19:53,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:19:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303388705] [2023-11-29 02:19:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303388705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:19:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678586292] [2023-11-29 02:19:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:53,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:19:53,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:53,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:53,081 INFO L87 Difference]: Start difference. First operand 2004 states and 2452 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:06,068 INFO L93 Difference]: Finished difference Result 2007 states and 2454 transitions. [2023-11-29 02:20:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:20:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 02:20:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:06,085 INFO L225 Difference]: With dead ends: 2007 [2023-11-29 02:20:06,085 INFO L226 Difference]: Without dead ends: 2007 [2023-11-29 02:20:06,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:06,086 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 6 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:06,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2913 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-11-29 02:20:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2023-11-29 02:20:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2007. [2023-11-29 02:20:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1029 states have (on average 2.2691933916423714) internal successors, (2335), 1937 states have internal predecessors, (2335), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:20:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2454 transitions. [2023-11-29 02:20:06,124 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2454 transitions. Word has length 25 [2023-11-29 02:20:06,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:06,124 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 2454 transitions. [2023-11-29 02:20:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:06,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2454 transitions. [2023-11-29 02:20:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 02:20:06,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:06,126 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:06,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:20:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:20:06,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:20:06,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1555715992, now seen corresponding path program 1 times [2023-11-29 02:20:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:20:06,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331761555] [2023-11-29 02:20:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:06,337 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 [2023-11-29 02:20:06,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:20:06,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:20:06,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:20:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:07,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:20:07,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:07,182 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 02:20:07,182 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 02:20:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:20:07,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:07,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:20:07,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331761555] [2023-11-29 02:20:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331761555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:07,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:20:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391783579] [2023-11-29 02:20:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:07,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:20:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:20:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:20:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:07,224 INFO L87 Difference]: Start difference. First operand 2007 states and 2454 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:20:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:26,308 INFO L93 Difference]: Finished difference Result 2080 states and 2455 transitions. [2023-11-29 02:20:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:20:26,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-29 02:20:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:26,319 INFO L225 Difference]: With dead ends: 2080 [2023-11-29 02:20:26,319 INFO L226 Difference]: Without dead ends: 2080 [2023-11-29 02:20:26,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:26,320 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 368 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:26,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 2644 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-11-29 02:20:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-11-29 02:20:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2002. [2023-11-29 02:20:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1029 states have (on average 2.2643343051506317) internal successors, (2330), 1932 states have internal predecessors, (2330), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:20:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2449 transitions. [2023-11-29 02:20:26,357 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2449 transitions. Word has length 32 [2023-11-29 02:20:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:26,357 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2449 transitions. [2023-11-29 02:20:26,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:20:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2449 transitions. [2023-11-29 02:20:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 02:20:26,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:26,358 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:26,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:20:26,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:20:26,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:20:26,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1555715993, now seen corresponding path program 1 times [2023-11-29 02:20:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:20:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100208610] [2023-11-29 02:20:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:26,569 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 [2023-11-29 02:20:26,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:20:26,570 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:20:26,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:20:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:27,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:20:27,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:27,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:20:27,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2023-11-29 02:20:27,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 02:20:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:20:27,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:27,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:20:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100208610] [2023-11-29 02:20:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100208610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:27,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:20:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254777960] [2023-11-29 02:20:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:20:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:20:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:20:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:20:27,669 INFO L87 Difference]: Start difference. First operand 2002 states and 2449 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:20:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:46,447 INFO L93 Difference]: Finished difference Result 2003 states and 2451 transitions. [2023-11-29 02:20:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:20:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-29 02:20:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:46,457 INFO L225 Difference]: With dead ends: 2003 [2023-11-29 02:20:46,457 INFO L226 Difference]: Without dead ends: 2003 [2023-11-29 02:20:46,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:20:46,458 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 1614 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:46,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 6660 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-11-29 02:20:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2023-11-29 02:20:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2023-11-29 02:20:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1029 states have (on average 2.2633624878522838) internal successors, (2329), 1931 states have internal predecessors, (2329), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:20:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2448 transitions. [2023-11-29 02:20:46,486 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2448 transitions. Word has length 32 [2023-11-29 02:20:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:46,487 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2448 transitions. [2023-11-29 02:20:46,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:20:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2448 transitions. [2023-11-29 02:20:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 02:20:46,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:46,488 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:46,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 02:20:46,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:20:46,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:20:46,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 397264089, now seen corresponding path program 1 times [2023-11-29 02:20:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:20:46,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231987599] [2023-11-29 02:20:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:46,703 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 [2023-11-29 02:20:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:20:46,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:20:46,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 02:20:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:47,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:20:47,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:47,694 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 02:20:47,694 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 1 case distinctions, treesize of input 19 treesize of output 21 [2023-11-29 02:20:48,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:20:48,096 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-29 02:20:48,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2023-11-29 02:20:48,136 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 02:20:48,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 02:20:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:20:48,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:48,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:20:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231987599] [2023-11-29 02:20:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231987599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:48,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:48,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:20:48,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504258030] [2023-11-29 02:20:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:48,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:20:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:20:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:20:48,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:20:48,321 INFO L87 Difference]: Start difference. First operand 2001 states and 2448 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:21:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:33,237 INFO L93 Difference]: Finished difference Result 2019 states and 2468 transitions. [2023-11-29 02:21:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:21:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-29 02:21:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:33,245 INFO L225 Difference]: With dead ends: 2019 [2023-11-29 02:21:33,245 INFO L226 Difference]: Without dead ends: 2019 [2023-11-29 02:21:33,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:21:33,246 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 1664 mSDsluCounter, 5952 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 7720 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:33,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 7720 Invalid, 2840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 44.4s Time] [2023-11-29 02:21:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2023-11-29 02:21:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2010. [2023-11-29 02:21:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1038 states have (on average 2.2591522157996144) internal successors, (2345), 1940 states have internal predecessors, (2345), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:21:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2464 transitions. [2023-11-29 02:21:33,281 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2464 transitions. Word has length 34 [2023-11-29 02:21:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:33,281 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2464 transitions. [2023-11-29 02:21:33,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:21:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2464 transitions. [2023-11-29 02:21:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 02:21:33,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:33,282 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:33,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 02:21:33,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:21:33,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:21:33,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash -478491596, now seen corresponding path program 1 times [2023-11-29 02:21:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:21:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919246897] [2023-11-29 02:21:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:33,484 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 [2023-11-29 02:21:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:21:33,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:21:33,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 02:21:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:21:34,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:34,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:21:34,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:21:34,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:21:34,646 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 02:21:34,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 02:21:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:21:34,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:21:34,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:21:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919246897] [2023-11-29 02:21:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919246897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:34,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:34,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311158316] [2023-11-29 02:21:34,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:34,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:34,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:21:34,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:34,690 INFO L87 Difference]: Start difference. First operand 2010 states and 2464 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:21:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:43,873 INFO L93 Difference]: Finished difference Result 2087 states and 2468 transitions. [2023-11-29 02:21:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-29 02:21:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:43,881 INFO L225 Difference]: With dead ends: 2087 [2023-11-29 02:21:43,881 INFO L226 Difference]: Without dead ends: 2087 [2023-11-29 02:21:43,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:43,882 INFO L413 NwaCegarLoop]: 1670 mSDtfsCounter, 368 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:43,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 2641 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 02:21:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-11-29 02:21:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2009. [2023-11-29 02:21:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1038 states have (on average 2.2572254335260116) internal successors, (2343), 1939 states have internal predecessors, (2343), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:21:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2462 transitions. [2023-11-29 02:21:43,912 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2462 transitions. Word has length 36 [2023-11-29 02:21:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:43,912 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2462 transitions. [2023-11-29 02:21:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:21:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2462 transitions. [2023-11-29 02:21:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 02:21:43,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:43,913 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:43,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 02:21:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:21:44,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:21:44,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash -478491595, now seen corresponding path program 1 times [2023-11-29 02:21:44,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:21:44,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700466381] [2023-11-29 02:21:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:44,115 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 [2023-11-29 02:21:44,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:21:44,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:21:44,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 02:21:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:45,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:21:45,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:45,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2023-11-29 02:21:45,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:21:45,372 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 11 treesize of output 10 [2023-11-29 02:21:45,400 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 [2023-11-29 02:21:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:21:45,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-29 02:21:45,712 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 02:21:45,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 02:21:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:21:45,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:21:45,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:21:45,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700466381] [2023-11-29 02:21:45,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700466381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:45,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:45,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:21:45,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832886898] [2023-11-29 02:21:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:45,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:21:45,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:21:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:21:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:21:45,910 INFO L87 Difference]: Start difference. First operand 2009 states and 2462 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:22:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:22:38,393 INFO L93 Difference]: Finished difference Result 2092 states and 2468 transitions. [2023-11-29 02:22:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:22:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-29 02:22:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:22:38,401 INFO L225 Difference]: With dead ends: 2092 [2023-11-29 02:22:38,401 INFO L226 Difference]: Without dead ends: 2092 [2023-11-29 02:22:38,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:22:38,402 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 2214 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 3886 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:22:38,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 6475 Invalid, 3898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 3886 Invalid, 0 Unknown, 0 Unchecked, 52.1s Time] [2023-11-29 02:22:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2023-11-29 02:22:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2009. [2023-11-29 02:22:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1038 states have (on average 2.25626204238921) internal successors, (2342), 1939 states have internal predecessors, (2342), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:22:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2461 transitions. [2023-11-29 02:22:38,431 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2461 transitions. Word has length 36 [2023-11-29 02:22:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:22:38,431 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2461 transitions. [2023-11-29 02:22:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:22:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2461 transitions. [2023-11-29 02:22:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 02:22:38,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:22:38,432 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:22:38,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 02:22:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:22:38,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:22:38,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:22:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash -266118485, now seen corresponding path program 1 times [2023-11-29 02:22:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:22:38,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160025452] [2023-11-29 02:22:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:22:38,634 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 [2023-11-29 02:22:38,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:22:38,635 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:22:38,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 02:22:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:22:39,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:22:39,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:22:39,844 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 [2023-11-29 02:22:39,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 02:22:40,080 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 02:22:40,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-11-29 02:22:40,171 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 02:22:40,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 14 [2023-11-29 02:22:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:22:40,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:22:40,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:22:40,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160025452] [2023-11-29 02:22:40,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160025452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:22:40,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:22:40,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:22:40,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020289812] [2023-11-29 02:22:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:22:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:22:40,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:22:40,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:22:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:22:40,211 INFO L87 Difference]: Start difference. First operand 2009 states and 2461 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:22:58,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:23:02,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:23:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:23:23,747 INFO L93 Difference]: Finished difference Result 2006 states and 2457 transitions. [2023-11-29 02:23:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:23:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-29 02:23:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:23:23,755 INFO L225 Difference]: With dead ends: 2006 [2023-11-29 02:23:23,755 INFO L226 Difference]: Without dead ends: 2006 [2023-11-29 02:23:23,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:23:23,756 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 1611 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:23:23,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 6045 Invalid, 4099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 4094 Invalid, 2 Unknown, 0 Unchecked, 43.3s Time] [2023-11-29 02:23:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2023-11-29 02:23:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2006. [2023-11-29 02:23:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1038 states have (on average 2.2524084778420037) internal successors, (2338), 1936 states have internal predecessors, (2338), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:23:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2457 transitions. [2023-11-29 02:23:23,783 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2457 transitions. Word has length 38 [2023-11-29 02:23:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:23:23,783 INFO L495 AbstractCegarLoop]: Abstraction has 2006 states and 2457 transitions. [2023-11-29 02:23:23,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:23:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2457 transitions. [2023-11-29 02:23:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 02:23:23,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:23:23,784 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:23,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 02:23:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:23:23,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:23:23,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -266118484, now seen corresponding path program 1 times [2023-11-29 02:23:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:23:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389735963] [2023-11-29 02:23:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:23,986 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 [2023-11-29 02:23:23,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:23:23,987 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:23:23,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 02:23:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:25,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:23:25,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:25,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 02:23:25,219 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 [2023-11-29 02:23:25,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-29 02:23:25,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-11-29 02:23:25,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2023-11-29 02:23:25,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-29 02:23:25,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2023-11-29 02:23:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:23:25,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:23:25,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:23:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389735963] [2023-11-29 02:23:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389735963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:25,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:25,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:23:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119711826] [2023-11-29 02:23:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:23:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:23:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:23:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:23:25,561 INFO L87 Difference]: Start difference. First operand 2006 states and 2457 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:23:43,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:24:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:24:01,585 INFO L93 Difference]: Finished difference Result 2005 states and 2455 transitions. [2023-11-29 02:24:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:24:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-29 02:24:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:24:01,591 INFO L225 Difference]: With dead ends: 2005 [2023-11-29 02:24:01,595 INFO L226 Difference]: Without dead ends: 2005 [2023-11-29 02:24:01,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:24:01,596 INFO L413 NwaCegarLoop]: 1783 mSDtfsCounter, 1608 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 5310 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:24:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 5310 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3188 Invalid, 1 Unknown, 0 Unchecked, 35.8s Time] [2023-11-29 02:24:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-11-29 02:24:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 2005. [2023-11-29 02:24:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1038 states have (on average 2.250481695568401) internal successors, (2336), 1935 states have internal predecessors, (2336), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:24:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2455 transitions. [2023-11-29 02:24:01,625 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2455 transitions. Word has length 38 [2023-11-29 02:24:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:24:01,625 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 2455 transitions. [2023-11-29 02:24:01,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:24:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2455 transitions. [2023-11-29 02:24:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:24:01,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:24:01,626 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:01,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 02:24:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:24:01,827 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:24:01,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 660798965, now seen corresponding path program 1 times [2023-11-29 02:24:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:24:01,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125227705] [2023-11-29 02:24:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:01,828 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 [2023-11-29 02:24:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:24:01,829 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:24:01,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 02:24:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:03,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:24:03,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:24:03,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 02:24:03,190 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 02:24:03,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 02:24:03,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-11-29 02:24:03,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 02:24:03,623 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-11-29 02:24:03,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-11-29 02:24:03,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-11-29 02:24:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:24:03,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:24:03,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:24:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125227705] [2023-11-29 02:24:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125227705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:03,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:03,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:24:03,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849596618] [2023-11-29 02:24:03,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:03,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:24:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:24:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:24:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:24:03,793 INFO L87 Difference]: Start difference. First operand 2005 states and 2455 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:24:25,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:24:29,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:24:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:24:52,703 INFO L93 Difference]: Finished difference Result 2092 states and 2473 transitions. [2023-11-29 02:24:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:24:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-29 02:24:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:24:52,708 INFO L225 Difference]: With dead ends: 2092 [2023-11-29 02:24:52,708 INFO L226 Difference]: Without dead ends: 2092 [2023-11-29 02:24:52,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:24:52,709 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1798 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:24:52,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 6419 Invalid, 4666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4656 Invalid, 2 Unknown, 0 Unchecked, 48.6s Time] [2023-11-29 02:24:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2023-11-29 02:24:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2011. [2023-11-29 02:24:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1044 states have (on average 2.2480842911877397) internal successors, (2347), 1941 states have internal predecessors, (2347), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:24:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2466 transitions. [2023-11-29 02:24:52,737 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2466 transitions. Word has length 41 [2023-11-29 02:24:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:24:52,738 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 2466 transitions. [2023-11-29 02:24:52,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:24:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2466 transitions. [2023-11-29 02:24:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:24:52,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:24:52,739 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:52,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 02:24:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:24:52,939 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:24:52,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 660798966, now seen corresponding path program 1 times [2023-11-29 02:24:52,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:24:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597558697] [2023-11-29 02:24:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:52,941 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 [2023-11-29 02:24:52,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:24:52,942 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:24:52,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 02:24:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:53,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 02:24:53,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:24:53,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 02:24:54,085 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 [2023-11-29 02:24:54,122 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 02:24:54,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 02:24:54,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-29 02:24:54,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 02:24:54,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 30 [2023-11-29 02:24:54,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-29 02:24:55,008 INFO L349 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2023-11-29 02:24:55,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 85 [2023-11-29 02:24:55,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 14 [2023-11-29 02:24:55,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-29 02:24:55,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 13 [2023-11-29 02:24:55,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2023-11-29 02:24:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 02:24:55,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:24:55,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:24:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597558697] [2023-11-29 02:24:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597558697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:55,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:24:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660366737] [2023-11-29 02:24:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:55,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:24:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:24:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:24:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:24:55,348 INFO L87 Difference]: Start difference. First operand 2011 states and 2466 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:25:33,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:25:37,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:25:41,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:25:45,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:26:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:31,224 INFO L93 Difference]: Finished difference Result 2090 states and 2468 transitions. [2023-11-29 02:26:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:26:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-29 02:26:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:31,228 INFO L225 Difference]: With dead ends: 2090 [2023-11-29 02:26:31,228 INFO L226 Difference]: Without dead ends: 2090 [2023-11-29 02:26:31,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:26:31,229 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1797 mSDsluCounter, 7587 mSDsCounter, 0 mSdLazyCounter, 8434 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9237 SdHoareTripleChecker+Invalid, 8448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8434 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:31,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 9237 Invalid, 8448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 8434 Invalid, 4 Unknown, 0 Unchecked, 94.8s Time] [2023-11-29 02:26:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2023-11-29 02:26:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2011. [2023-11-29 02:26:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1044 states have (on average 2.2442528735632186) internal successors, (2343), 1941 states have internal predecessors, (2343), 65 states have call successors, (65), 18 states have call predecessors, (65), 14 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:26:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2462 transitions. [2023-11-29 02:26:31,249 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2462 transitions. Word has length 41 [2023-11-29 02:26:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:31,249 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 2462 transitions. [2023-11-29 02:26:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 02:26:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2462 transitions. [2023-11-29 02:26:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 02:26:31,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:31,249 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:26:31,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 02:26:31,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:26:31,450 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [utimesErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, utimesErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 910 more)] === [2023-11-29 02:26:31,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2113508021, now seen corresponding path program 1 times [2023-11-29 02:26:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:26:31,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132002320] [2023-11-29 02:26:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:31,452 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 [2023-11-29 02:26:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:26:31,453 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 02:26:31,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d13b8f4-ca1d-40ca-8678-1eea04e746cb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 02:26:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:32,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:26:32,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:32,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 02:26:32,768 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 02:26:32,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 02:26:32,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-11-29 02:26:33,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 02:26:33,242 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-11-29 02:26:33,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-11-29 02:26:33,455 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-11-29 02:26:33,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-11-29 02:26:33,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-11-29 02:26:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 02:26:33,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:38,046 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1355 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1355) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-11-29 02:26:38,094 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1355 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1354 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem520#1.base| v_ArrVal_1354))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1355)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) is different from false [2023-11-29 02:26:38,442 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1355 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1354 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1353 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1353))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1354)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1355)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 02:26:38,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:26:38,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2023-11-29 02:26:38,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7063 treesize of output 5668 [2023-11-29 02:26:38,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2559 treesize of output 2363 [2023-11-29 02:26:38,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2363 treesize of output 1971 [2023-11-29 02:26:38,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1971 treesize of output 1733 [2023-11-29 02:27:01,315 WARN L293 SmtUtils]: Spent 15.36s on a formula simplification that was a NOOP. DAG size: 716 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 02:27:01,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:27:01,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 227 treesize of output 1553