./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:40:08,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:40:08,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:40:08,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:40:08,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:40:08,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:40:08,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:40:08,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:40:08,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:40:08,448 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:40:08,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:40:08,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:40:08,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:40:08,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:40:08,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:40:08,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:40:08,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:40:08,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:40:08,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:40:08,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:40:08,456 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:40:08,457 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:40:08,457 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:40:08,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:40:08,458 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:40:08,459 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:40:08,459 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:40:08,460 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:40:08,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:40:08,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:40:08,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:40:08,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:40:08,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:08,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:40:08,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:40:08,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:40:08,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:40:08,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:40:08,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:40:08,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:40:08,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:40:08,467 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_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-11-24 21:40:08,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:40:08,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:40:08,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:40:08,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:40:08,873 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:40:08,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2023-11-24 21:40:11,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:40:12,311 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:40:12,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2023-11-24 21:40:12,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/02c4ece37/251273018763411caab5100fa9d38a2b/FLAGc77ea5806 [2023-11-24 21:40:12,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/02c4ece37/251273018763411caab5100fa9d38a2b [2023-11-24 21:40:12,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:40:12,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:40:12,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:12,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:40:12,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:40:12,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:12" (1/1) ... [2023-11-24 21:40:12,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bece6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:12, skipping insertion in model container [2023-11-24 21:40:12,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:12" (1/1) ... [2023-11-24 21:40:12,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:40:13,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:13,177 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:40:13,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@628005fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:13, skipping insertion in model container [2023-11-24 21:40:13,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:13,179 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:40:13,181 INFO L158 Benchmark]: Toolchain (without parser) took 825.76ms. Allocated memory is still 169.9MB. Free memory was 130.6MB in the beginning and 108.8MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:40:13,181 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:40:13,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 823.14ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 108.8MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:40:13,184 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 823.14ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 108.8MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:40:15,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:40:15,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:40:15,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:40:15,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:40:15,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:40:15,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:40:15,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:40:15,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:40:15,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:40:15,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:40:15,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:40:15,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:40:15,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:40:15,953 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:40:15,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:40:15,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:40:15,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:40:15,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:40:15,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:40:15,957 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:40:15,958 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:40:15,958 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:40:15,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:40:15,959 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:40:15,959 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:40:15,960 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:40:15,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:40:15,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:40:15,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:40:15,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:40:15,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:40:15,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:40:15,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:40:15,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:15,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:40:15,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:40:15,966 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:40:15,967 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:40:15,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:40:15,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:40:15,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:40:15,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:40:15,968 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:40:15,969 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_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-11-24 21:40:16,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:40:16,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:40:16,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:40:16,414 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:40:16,416 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:40:16,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2023-11-24 21:40:19,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:40:20,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:40:20,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2023-11-24 21:40:20,282 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/d03325ddb/a9fa602b4a3149fab258850ca12d7d3f/FLAG7c388c7c8 [2023-11-24 21:40:20,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/data/d03325ddb/a9fa602b4a3149fab258850ca12d7d3f [2023-11-24 21:40:20,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:40:20,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:40:20,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:20,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:40:20,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:40:20,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:20" (1/1) ... [2023-11-24 21:40:20,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15601294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:20, skipping insertion in model container [2023-11-24 21:40:20,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:20" (1/1) ... [2023-11-24 21:40:20,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:40:21,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:21,289 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:40:21,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:40:21,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:21,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:40:21,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:21,600 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:40:21,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21 WrapperNode [2023-11-24 21:40:21,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:21,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:21,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:40:21,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:40:21,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:21,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:21,772 INFO L138 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1449 [2023-11-24 21:40:21,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:21,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:40:21,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:40:21,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:40:21,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:21,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:21,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,029 INFO L175 MemorySlicer]: Split 413 memory accesses to 4 slices as follows [2, 5, 5, 401]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 100 writes are split as follows [0, 1, 1, 98]. [2023-11-24 21:40:22,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:40:22,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:40:22,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:40:22,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:40:22,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (1/1) ... [2023-11-24 21:40:22,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:22,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:40:22,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:40:22,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:40:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:40:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:40:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:40:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 21:40:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:40:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:40:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:40:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:40:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:40:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:40:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:40:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-24 21:40:22,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:40:22,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:40:22,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:40:22,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-24 21:40:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:40:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:40:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:40:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:40:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:40:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:40:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:40:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:40:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:40:22,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:40:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:40:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:40:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:40:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:40:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:40:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:40:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:40:22,561 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:40:22,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:40:22,568 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:40:22,643 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:40:22,682 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:40:22,716 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:40:30,139 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:40:30,427 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:40:30,427 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-24 21:40:30,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:40:30 BoogieIcfgContainer [2023-11-24 21:40:30,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:40:30,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:40:30,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:40:30,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:40:30,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:40:20" (1/3) ... [2023-11-24 21:40:30,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2b200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:40:30, skipping insertion in model container [2023-11-24 21:40:30,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:21" (2/3) ... [2023-11-24 21:40:30,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2b200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:40:30, skipping insertion in model container [2023-11-24 21:40:30,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:40:30" (3/3) ... [2023-11-24 21:40:30,441 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test4-3.i [2023-11-24 21:40:30,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:40:30,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-24 21:40:30,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:40:30,557 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;@5f31fd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:40:30,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-24 21:40:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 1485 states, 632 states have (on average 2.5838607594936707) internal successors, (1633), 1477 states have internal predecessors, (1633), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:40:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:40:30,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:30,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:40:30,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr850ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:30,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2385053, now seen corresponding path program 1 times [2023-11-24 21:40:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:30,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518717888] [2023-11-24 21:40:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:30,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:30,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:30,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:40:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:30,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:40:30,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:30,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:30,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:30,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518717888] [2023-11-24 21:40:30,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518717888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:30,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:30,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:40:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066337119] [2023-11-24 21:40:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:30,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:30,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:30,949 INFO L87 Difference]: Start difference. First operand has 1485 states, 632 states have (on average 2.5838607594936707) internal successors, (1633), 1477 states have internal predecessors, (1633), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-24 21:40:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:35,594 INFO L93 Difference]: Finished difference Result 1812 states and 1907 transitions. [2023-11-24 21:40:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:35,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-24 21:40:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:35,638 INFO L225 Difference]: With dead ends: 1812 [2023-11-24 21:40:35,638 INFO L226 Difference]: Without dead ends: 1809 [2023-11-24 21:40:35,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:35,644 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 364 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:35,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 2078 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-24 21:40:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-11-24 21:40:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1480. [2023-11-24 21:40:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 638 states have (on average 2.4357366771159876) internal successors, (1554), 1472 states have internal predecessors, (1554), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:40:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1566 transitions. [2023-11-24 21:40:35,779 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1566 transitions. Word has length 3 [2023-11-24 21:40:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:35,779 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1566 transitions. [2023-11-24 21:40:35,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-24 21:40:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1566 transitions. [2023-11-24 21:40:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:40:35,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:35,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:40:35,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:35,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:35,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:35,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2005150439, now seen corresponding path program 1 times [2023-11-24 21:40:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:35,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197529789] [2023-11-24 21:40:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:35,986 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 [2023-11-24 21:40:35,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:35,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:36,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:40:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:36,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:40:36,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:36,260 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 [2023-11-24 21:40:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:36,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:36,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:36,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197529789] [2023-11-24 21:40:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197529789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:36,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:40:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519446472] [2023-11-24 21:40:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:36,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:36,291 INFO L87 Difference]: Start difference. First operand 1480 states and 1566 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:39,885 INFO L93 Difference]: Finished difference Result 1510 states and 1607 transitions. [2023-11-24 21:40:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:39,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 21:40:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:39,897 INFO L225 Difference]: With dead ends: 1510 [2023-11-24 21:40:39,897 INFO L226 Difference]: Without dead ends: 1510 [2023-11-24 21:40:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:39,905 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1029 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:39,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1030 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 21:40:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-11-24 21:40:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1453. [2023-11-24 21:40:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 704 states have (on average 2.25) internal successors, (1584), 1445 states have internal predecessors, (1584), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:40:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1596 transitions. [2023-11-24 21:40:39,956 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1596 transitions. Word has length 5 [2023-11-24 21:40:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:39,957 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1596 transitions. [2023-11-24 21:40:39,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1596 transitions. [2023-11-24 21:40:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:40:39,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:39,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:40:39,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:40,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:40,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:40,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2005150438, now seen corresponding path program 1 times [2023-11-24 21:40:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:40,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93957252] [2023-11-24 21:40:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:40,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:40,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:40,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:40,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:40:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:40,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:40:40,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:40,365 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 [2023-11-24 21:40:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:40,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:40,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93957252] [2023-11-24 21:40:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93957252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:40:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748855117] [2023-11-24 21:40:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:40,396 INFO L87 Difference]: Start difference. First operand 1453 states and 1596 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:45,865 INFO L93 Difference]: Finished difference Result 1725 states and 1888 transitions. [2023-11-24 21:40:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 21:40:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:45,875 INFO L225 Difference]: With dead ends: 1725 [2023-11-24 21:40:45,876 INFO L226 Difference]: Without dead ends: 1725 [2023-11-24 21:40:45,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:45,877 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 456 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:45,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1626 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-24 21:40:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-11-24 21:40:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1576. [2023-11-24 21:40:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 837 states have (on average 2.218637992831541) internal successors, (1857), 1568 states have internal predecessors, (1857), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:40:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1869 transitions. [2023-11-24 21:40:45,931 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1869 transitions. Word has length 5 [2023-11-24 21:40:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:45,932 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 1869 transitions. [2023-11-24 21:40:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1869 transitions. [2023-11-24 21:40:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 21:40:45,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:45,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:40:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:46,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:46,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:46,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2028430167, now seen corresponding path program 1 times [2023-11-24 21:40:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419355767] [2023-11-24 21:40:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:46,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:46,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:46,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:40:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:46,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:40:46,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:46,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:46,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:46,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419355767] [2023-11-24 21:40:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419355767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:46,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:40:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962857617] [2023-11-24 21:40:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:46,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:40:46,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:40:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:40:46,394 INFO L87 Difference]: Start difference. First operand 1576 states and 1869 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:50,007 INFO L93 Difference]: Finished difference Result 2679 states and 3172 transitions. [2023-11-24 21:40:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:40:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 21:40:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:50,022 INFO L225 Difference]: With dead ends: 2679 [2023-11-24 21:40:50,023 INFO L226 Difference]: Without dead ends: 2679 [2023-11-24 21:40:50,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:40:50,024 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1072 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:50,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 3550 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 21:40:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-11-24 21:40:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2022. [2023-11-24 21:40:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1283 states have (on average 2.176149649259548) internal successors, (2792), 2011 states have internal predecessors, (2792), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:40:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2810 transitions. [2023-11-24 21:40:50,086 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2810 transitions. Word has length 6 [2023-11-24 21:40:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:50,086 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2810 transitions. [2023-11-24 21:40:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2810 transitions. [2023-11-24 21:40:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 21:40:50,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:50,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:40:50,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:50,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:50,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 593798675, now seen corresponding path program 1 times [2023-11-24 21:40:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761033320] [2023-11-24 21:40:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:50,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:50,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:50,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:40:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:50,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:40:50,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:50,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:50,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:50,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761033320] [2023-11-24 21:40:50,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761033320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:50,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:50,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:40:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078065799] [2023-11-24 21:40:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:50,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:50,550 INFO L87 Difference]: Start difference. First operand 2022 states and 2810 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:40:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:52,797 INFO L93 Difference]: Finished difference Result 2304 states and 2944 transitions. [2023-11-24 21:40:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-24 21:40:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:52,815 INFO L225 Difference]: With dead ends: 2304 [2023-11-24 21:40:52,815 INFO L226 Difference]: Without dead ends: 2304 [2023-11-24 21:40:52,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:52,817 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 543 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:52,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 2487 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 21:40:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2023-11-24 21:40:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 1913. [2023-11-24 21:40:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1174 states have (on average 2.183986371379898) internal successors, (2564), 1902 states have internal predecessors, (2564), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:40:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2582 transitions. [2023-11-24 21:40:52,875 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2582 transitions. Word has length 8 [2023-11-24 21:40:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:52,875 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2582 transitions. [2023-11-24 21:40:52,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:40:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2582 transitions. [2023-11-24 21:40:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:40:52,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:52,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:40:52,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:53,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:53,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1106372499, now seen corresponding path program 1 times [2023-11-24 21:40:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164395884] [2023-11-24 21:40:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:53,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:53,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:53,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:53,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:40:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:53,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:40:53,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:53,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:53,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164395884] [2023-11-24 21:40:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164395884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:53,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:40:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309716216] [2023-11-24 21:40:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:40:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:40:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:40:53,364 INFO L87 Difference]: Start difference. First operand 1913 states and 2582 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:56,581 INFO L93 Difference]: Finished difference Result 2304 states and 2943 transitions. [2023-11-24 21:40:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:40:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 21:40:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:56,595 INFO L225 Difference]: With dead ends: 2304 [2023-11-24 21:40:56,595 INFO L226 Difference]: Without dead ends: 2298 [2023-11-24 21:40:56,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:40:56,597 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 549 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3619 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:56,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 3619 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 21:40:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-11-24 21:40:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1907. [2023-11-24 21:40:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1168 states have (on average 2.1892123287671232) internal successors, (2557), 1896 states have internal predecessors, (2557), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:40:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2575 transitions. [2023-11-24 21:40:56,661 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2575 transitions. Word has length 11 [2023-11-24 21:40:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:56,661 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2575 transitions. [2023-11-24 21:40:56,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2575 transitions. [2023-11-24 21:40:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:40:56,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:56,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:40:56,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:56,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:56,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:56,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:56,866 INFO L85 PathProgramCache]: Analyzing trace with hash -251212221, now seen corresponding path program 1 times [2023-11-24 21:40:56,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:56,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077325172] [2023-11-24 21:40:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:56,867 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 [2023-11-24 21:40:56,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:56,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:56,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:40:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:57,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:40:57,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:57,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:57,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:40:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077325172] [2023-11-24 21:40:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077325172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:57,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:57,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:40:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655976575] [2023-11-24 21:40:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:57,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:40:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:57,114 INFO L87 Difference]: Start difference. First operand 1907 states and 2575 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:58,794 INFO L93 Difference]: Finished difference Result 1853 states and 2495 transitions. [2023-11-24 21:40:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 21:40:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:58,807 INFO L225 Difference]: With dead ends: 1853 [2023-11-24 21:40:58,807 INFO L226 Difference]: Without dead ends: 1853 [2023-11-24 21:40:58,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:58,808 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 70 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:58,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2409 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:40:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-11-24 21:40:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1853. [2023-11-24 21:40:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1138 states have (on average 2.1766256590509667) internal successors, (2477), 1842 states have internal predecessors, (2477), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:40:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2495 transitions. [2023-11-24 21:40:58,854 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2495 transitions. Word has length 11 [2023-11-24 21:40:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:58,855 INFO L495 AbstractCegarLoop]: Abstraction has 1853 states and 2495 transitions. [2023-11-24 21:40:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2495 transitions. [2023-11-24 21:40:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 21:40:58,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:58,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:40:58,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:59,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 21:40:59,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -896778947, now seen corresponding path program 1 times [2023-11-24 21:40:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:40:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286613196] [2023-11-24 21:40:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:40:59,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:40:59,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:40:59,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbbf60d2-7e09-44dd-aecf-beed83f01e3a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process