./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu --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 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:12,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:12,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:04:12,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:12,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:12,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:12,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:12,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:12,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:12,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:12,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:12,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:12,336 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:12,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:12,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:12,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:12,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:12,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:12,341 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:04:12,341 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:04:12,342 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:04:12,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:12,343 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:04:12,344 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:12,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:12,345 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:12,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:12,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:12,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:12,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:12,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:12,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:12,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:12,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:12,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:12,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:12,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:12,351 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:12,351 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_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c [2023-11-19 08:04:12,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:12,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:12,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:12,640 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:12,640 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:12,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2023-11-19 08:04:15,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:16,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:16,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2023-11-19 08:04:16,184 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/60d5d776b/dbe2c0e5098f463eb0ccc88a544965c5/FLAG4c8f52af2 [2023-11-19 08:04:16,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/60d5d776b/dbe2c0e5098f463eb0ccc88a544965c5 [2023-11-19 08:04:16,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:16,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:16,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:16,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:16,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:16,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:16" (1/1) ... [2023-11-19 08:04:16,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d05fbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:16, skipping insertion in model container [2023-11-19 08:04:16,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:16" (1/1) ... [2023-11-19 08:04:16,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:16,627 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:16,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:17,022 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) [2023-11-19 08:04:17,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a3a1383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:17, skipping insertion in model container [2023-11-19 08:04:17,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:17,036 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 08:04:17,038 INFO L158 Benchmark]: Toolchain (without parser) took 825.69ms. Allocated memory is still 153.1MB. Free memory was 109.1MB in the beginning and 88.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:04:17,038 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:17,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 821.03ms. Allocated memory is still 153.1MB. Free memory was 108.9MB in the beginning and 88.8MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 08:04:17,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 821.03ms. Allocated memory is still 153.1MB. Free memory was 108.9MB in the beginning and 88.8MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 817]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu --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 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:19,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:19,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 08:04:19,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:19,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:19,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:19,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:19,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:19,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:19,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:19,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:19,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:19,660 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:19,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:19,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:19,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:19,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:19,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:19,664 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:04:19,665 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:04:19,665 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:04:19,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:19,666 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:04:19,667 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:04:19,667 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:04:19,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:19,668 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:19,668 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:19,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:19,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:19,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:19,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:19,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:19,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:19,673 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:04:19,673 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:04:19,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:19,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:19,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:19,675 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:04:19,675 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:19,675 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_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c [2023-11-19 08:04:20,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:20,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:20,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:20,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:20,061 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:20,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2023-11-19 08:04:23,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:23,550 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:23,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2023-11-19 08:04:23,581 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/efbfd7372/863a3dc0b6e44f8e96a33135b082c158/FLAG701fae126 [2023-11-19 08:04:23,602 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/data/efbfd7372/863a3dc0b6e44f8e96a33135b082c158 [2023-11-19 08:04:23,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:23,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:23,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:23,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:23,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:23,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7678742b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23, skipping insertion in model container [2023-11-19 08:04:23,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:24,072 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:24,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:24,493 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 08:04:24,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:24,521 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:24,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:24,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:24,784 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:24,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:24,916 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:24,917 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:24,925 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:24,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24 WrapperNode [2023-11-19 08:04:24,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:24,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:24,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:24,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:24,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,086 INFO L138 Inliner]: procedures = 211, calls = 282, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1040 [2023-11-19 08:04:25,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:25,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:25,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:25,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:25,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:25,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:25,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:25,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:25,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:25,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 08:04:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 08:04:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:04:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:04:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 08:04:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:04:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:04:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:04:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:04:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:04:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:25,676 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:25,678 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:25,683 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 08:04:30,921 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:30,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:30,944 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 08:04:30,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:30 BoogieIcfgContainer [2023-11-19 08:04:30,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:30,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:30,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:30,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:30,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:23" (1/3) ... [2023-11-19 08:04:30,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73549924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:30, skipping insertion in model container [2023-11-19 08:04:30,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (2/3) ... [2023-11-19 08:04:30,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73549924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:30, skipping insertion in model container [2023-11-19 08:04:30,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:30" (3/3) ... [2023-11-19 08:04:30,970 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2023-11-19 08:04:30,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:30,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2023-11-19 08:04:31,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:31,079 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;@1abd084e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:31,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2023-11-19 08:04:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1069 states, 536 states have (on average 2.220149253731343) internal successors, (1190), 1064 states have internal predecessors, (1190), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:04:31,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:31,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:31,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:31,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1202725, now seen corresponding path program 1 times [2023-11-19 08:04:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765678341] [2023-11-19 08:04:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:31,112 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 [2023-11-19 08:04:31,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:31,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:31,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:31,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:31,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:31,377 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 [2023-11-19 08:04:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:31,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:31,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765678341] [2023-11-19 08:04:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765678341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:31,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:31,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573531961] [2023-11-19 08:04:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:31,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:31,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:31,465 INFO L87 Difference]: Start difference. First operand has 1069 states, 536 states have (on average 2.220149253731343) internal successors, (1190), 1064 states have internal predecessors, (1190), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:33,961 INFO L93 Difference]: Finished difference Result 1237 states and 1304 transitions. [2023-11-19 08:04:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 08:04:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:33,985 INFO L225 Difference]: With dead ends: 1237 [2023-11-19 08:04:33,985 INFO L226 Difference]: Without dead ends: 1235 [2023-11-19 08:04:33,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:33,990 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 986 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:33,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 787 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 08:04:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-11-19 08:04:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1055. [2023-11-19 08:04:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 538 states have (on average 2.059479553903346) internal successors, (1108), 1050 states have internal predecessors, (1108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1114 transitions. [2023-11-19 08:04:34,091 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1114 transitions. Word has length 4 [2023-11-19 08:04:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:34,092 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1114 transitions. [2023-11-19 08:04:34,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1114 transitions. [2023-11-19 08:04:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:04:34,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:34,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:34,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:34,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:34,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1202726, now seen corresponding path program 1 times [2023-11-19 08:04:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114792423] [2023-11-19 08:04:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,299 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 [2023-11-19 08:04:34,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:34,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:34,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:34,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:34,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:34,469 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 [2023-11-19 08:04:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:34,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:34,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:34,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114792423] [2023-11-19 08:04:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114792423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:34,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897719778] [2023-11-19 08:04:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:34,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:34,509 INFO L87 Difference]: Start difference. First operand 1055 states and 1114 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:38,136 INFO L93 Difference]: Finished difference Result 1462 states and 1553 transitions. [2023-11-19 08:04:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:38,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 08:04:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:38,145 INFO L225 Difference]: With dead ends: 1462 [2023-11-19 08:04:38,145 INFO L226 Difference]: Without dead ends: 1462 [2023-11-19 08:04:38,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:38,147 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 439 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:38,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1501 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 08:04:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-11-19 08:04:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1177. [2023-11-19 08:04:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 661 states have (on average 2.0151285930408473) internal successors, (1332), 1172 states have internal predecessors, (1332), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1338 transitions. [2023-11-19 08:04:38,191 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1338 transitions. Word has length 4 [2023-11-19 08:04:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:38,192 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1338 transitions. [2023-11-19 08:04:38,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1338 transitions. [2023-11-19 08:04:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:04:38,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:38,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:38,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 08:04:38,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:38,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:38,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1204325, now seen corresponding path program 1 times [2023-11-19 08:04:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122157371] [2023-11-19 08:04:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:38,398 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 [2023-11-19 08:04:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:38,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:38,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:04:38,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:38,630 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_43|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_43| (_ bv0 1))))) is different from true [2023-11-19 08:04:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:38,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:38,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122157371] [2023-11-19 08:04:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122157371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:38,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:38,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601579479] [2023-11-19 08:04:38,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:38,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 08:04:38,638 INFO L87 Difference]: Start difference. First operand 1177 states and 1338 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:41,495 INFO L93 Difference]: Finished difference Result 1447 states and 1536 transitions. [2023-11-19 08:04:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 08:04:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:41,503 INFO L225 Difference]: With dead ends: 1447 [2023-11-19 08:04:41,504 INFO L226 Difference]: Without dead ends: 1446 [2023-11-19 08:04:41,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 08:04:41,505 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 421 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1526 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:41,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1499 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 715 Invalid, 0 Unknown, 1526 Unchecked, 2.8s Time] [2023-11-19 08:04:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-19 08:04:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1177. [2023-11-19 08:04:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 661 states have (on average 2.0136157337367626) internal successors, (1331), 1172 states have internal predecessors, (1331), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1337 transitions. [2023-11-19 08:04:41,541 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1337 transitions. Word has length 4 [2023-11-19 08:04:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:41,542 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1337 transitions. [2023-11-19 08:04:41,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1337 transitions. [2023-11-19 08:04:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 08:04:41,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:41,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:41,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 08:04:41,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:41,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:41,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1654943313, now seen corresponding path program 1 times [2023-11-19 08:04:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596270685] [2023-11-19 08:04:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:41,763 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 [2023-11-19 08:04:41,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:41,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:41,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:41,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:04:41,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:41,947 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 [2023-11-19 08:04:41,963 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 [2023-11-19 08:04:42,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:04:42,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 08:04:42,113 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 08:04:42,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 08:04:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:42,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:42,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:42,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596270685] [2023-11-19 08:04:42,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596270685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:42,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:42,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716264143] [2023-11-19 08:04:42,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:42,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:42,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:42,154 INFO L87 Difference]: Start difference. First operand 1177 states and 1337 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-11-19 08:04:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:45,956 INFO L93 Difference]: Finished difference Result 1346 states and 1514 transitions. [2023-11-19 08:04:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2023-11-19 08:04:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:45,964 INFO L225 Difference]: With dead ends: 1346 [2023-11-19 08:04:45,964 INFO L226 Difference]: Without dead ends: 1346 [2023-11-19 08:04:45,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:45,966 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2229 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:45,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 448 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-19 08:04:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-11-19 08:04:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1044. [2023-11-19 08:04:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 538 states have (on average 2.0353159851301115) internal successors, (1095), 1039 states have internal predecessors, (1095), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1101 transitions. [2023-11-19 08:04:45,997 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1101 transitions. Word has length 8 [2023-11-19 08:04:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:45,997 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1101 transitions. [2023-11-19 08:04:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-11-19 08:04:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1101 transitions. [2023-11-19 08:04:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 08:04:45,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:45,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:46,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:46,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:46,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:46,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:46,208 INFO L85 PathProgramCache]: Analyzing trace with hash 236364828, now seen corresponding path program 1 times [2023-11-19 08:04:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798332353] [2023-11-19 08:04:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:46,209 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 [2023-11-19 08:04:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:46,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:46,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:46,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:46,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:46,347 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 [2023-11-19 08:04:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:46,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:46,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:46,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798332353] [2023-11-19 08:04:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798332353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145565648] [2023-11-19 08:04:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:46,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:46,369 INFO L87 Difference]: Start difference. First operand 1044 states and 1101 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 08:04:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:48,492 INFO L93 Difference]: Finished difference Result 1207 states and 1285 transitions. [2023-11-19 08:04:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 08:04:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:48,500 INFO L225 Difference]: With dead ends: 1207 [2023-11-19 08:04:48,500 INFO L226 Difference]: Without dead ends: 1207 [2023-11-19 08:04:48,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:48,501 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 803 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:48,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1123 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:04:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-11-19 08:04:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 997. [2023-11-19 08:04:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 538 states have (on average 1.9479553903345725) internal successors, (1048), 992 states have internal predecessors, (1048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1054 transitions. [2023-11-19 08:04:48,530 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1054 transitions. Word has length 9 [2023-11-19 08:04:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:48,530 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1054 transitions. [2023-11-19 08:04:48,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 08:04:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1054 transitions. [2023-11-19 08:04:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 08:04:48,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:48,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:48,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:48,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:48,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 236364829, now seen corresponding path program 1 times [2023-11-19 08:04:48,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:48,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209186283] [2023-11-19 08:04:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:48,736 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 [2023-11-19 08:04:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:48,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:48,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:48,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:48,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:48,906 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 [2023-11-19 08:04:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:48,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:48,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209186283] [2023-11-19 08:04:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209186283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833746852] [2023-11-19 08:04:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:48,941 INFO L87 Difference]: Start difference. First operand 997 states and 1054 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 08:04:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:52,131 INFO L93 Difference]: Finished difference Result 1275 states and 1356 transitions. [2023-11-19 08:04:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:52,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 08:04:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:52,139 INFO L225 Difference]: With dead ends: 1275 [2023-11-19 08:04:52,139 INFO L226 Difference]: Without dead ends: 1275 [2023-11-19 08:04:52,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:52,140 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 490 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:52,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1479 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 08:04:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-11-19 08:04:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1019. [2023-11-19 08:04:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 570 states have (on average 1.936842105263158) internal successors, (1104), 1014 states have internal predecessors, (1104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1110 transitions. [2023-11-19 08:04:52,167 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1110 transitions. Word has length 9 [2023-11-19 08:04:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:52,167 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1110 transitions. [2023-11-19 08:04:52,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 08:04:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1110 transitions. [2023-11-19 08:04:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 08:04:52,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:52,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:52,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:52,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:52,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1355305628, now seen corresponding path program 1 times [2023-11-19 08:04:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664628438] [2023-11-19 08:04:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:52,372 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 [2023-11-19 08:04:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:52,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:52,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 08:04:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:52,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:52,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:52,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:52,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:52,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664628438] [2023-11-19 08:04:52,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664628438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:52,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:52,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:52,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090788452] [2023-11-19 08:04:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:52,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:52,607 INFO L87 Difference]: Start difference. First operand 1019 states and 1110 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:52,962 INFO L93 Difference]: Finished difference Result 1485 states and 1611 transitions. [2023-11-19 08:04:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:52,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 08:04:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:52,971 INFO L225 Difference]: With dead ends: 1485 [2023-11-19 08:04:52,971 INFO L226 Difference]: Without dead ends: 1485 [2023-11-19 08:04:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:52,972 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 559 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:52,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1987 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:04:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-19 08:04:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1193. [2023-11-19 08:04:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 744 states have (on average 1.8776881720430108) internal successors, (1397), 1188 states have internal predecessors, (1397), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1403 transitions. [2023-11-19 08:04:53,004 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1403 transitions. Word has length 12 [2023-11-19 08:04:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:53,008 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1403 transitions. [2023-11-19 08:04:53,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1403 transitions. [2023-11-19 08:04:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 08:04:53,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:53,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:53,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-19 08:04:53,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:53,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:53,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 729190072, now seen corresponding path program 1 times [2023-11-19 08:04:53,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923028351] [2023-11-19 08:04:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:53,213 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 [2023-11-19 08:04:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:53,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:53,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 08:04:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:53,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:04:53,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:53,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:53,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923028351] [2023-11-19 08:04:53,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923028351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:53,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:53,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:53,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530586868] [2023-11-19 08:04:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:53,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:53,389 INFO L87 Difference]: Start difference. First operand 1193 states and 1403 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-19 08:04:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:53,423 INFO L93 Difference]: Finished difference Result 1133 states and 1317 transitions. [2023-11-19 08:04:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-19 08:04:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:53,430 INFO L225 Difference]: With dead ends: 1133 [2023-11-19 08:04:53,430 INFO L226 Difference]: Without dead ends: 1133 [2023-11-19 08:04:53,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:53,431 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 81 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:53,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1890 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-11-19 08:04:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2023-11-19 08:04:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 708 states have (on average 1.8516949152542372) internal successors, (1311), 1128 states have internal predecessors, (1311), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1317 transitions. [2023-11-19 08:04:53,478 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1317 transitions. Word has length 14 [2023-11-19 08:04:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:53,479 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1317 transitions. [2023-11-19 08:04:53,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-19 08:04:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1317 transitions. [2023-11-19 08:04:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 08:04:53,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:53,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:53,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:53,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:53,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1070470822, now seen corresponding path program 1 times [2023-11-19 08:04:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450629153] [2023-11-19 08:04:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:53,685 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 [2023-11-19 08:04:53,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:53,686 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:53,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 08:04:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:53,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:04:53,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:53,991 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_44| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-19 08:04:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:53,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:53,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450629153] [2023-11-19 08:04:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450629153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:53,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677265474] [2023-11-19 08:04:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 08:04:53,995 INFO L87 Difference]: Start difference. First operand 1133 states and 1317 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:55,996 INFO L93 Difference]: Finished difference Result 1408 states and 1612 transitions. [2023-11-19 08:04:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:55,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 08:04:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:56,003 INFO L225 Difference]: With dead ends: 1408 [2023-11-19 08:04:56,004 INFO L226 Difference]: Without dead ends: 1406 [2023-11-19 08:04:56,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 08:04:56,005 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 286 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1291 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:56,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1420 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 1291 Unchecked, 2.0s Time] [2023-11-19 08:04:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-19 08:04:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1204. [2023-11-19 08:04:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 779 states have (on average 1.8189987163029524) internal successors, (1417), 1199 states have internal predecessors, (1417), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1423 transitions. [2023-11-19 08:04:56,037 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1423 transitions. Word has length 15 [2023-11-19 08:04:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:56,038 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1423 transitions. [2023-11-19 08:04:56,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1423 transitions. [2023-11-19 08:04:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 08:04:56,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:56,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:56,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:56,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:56,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1070477732, now seen corresponding path program 1 times [2023-11-19 08:04:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52936924] [2023-11-19 08:04:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:56,244 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 [2023-11-19 08:04:56,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:56,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:56,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 08:04:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:56,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:56,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:56,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:56,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52936924] [2023-11-19 08:04:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52936924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115442106] [2023-11-19 08:04:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:56,522 INFO L87 Difference]: Start difference. First operand 1204 states and 1423 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:57,359 INFO L93 Difference]: Finished difference Result 1474 states and 1632 transitions. [2023-11-19 08:04:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:57,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 08:04:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:57,366 INFO L225 Difference]: With dead ends: 1474 [2023-11-19 08:04:57,366 INFO L226 Difference]: Without dead ends: 1470 [2023-11-19 08:04:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:57,367 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 522 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:57,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 2853 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:04:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-19 08:04:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1202. [2023-11-19 08:04:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 777 states have (on average 1.8198198198198199) internal successors, (1414), 1197 states have internal predecessors, (1414), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1420 transitions. [2023-11-19 08:04:57,399 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1420 transitions. Word has length 15 [2023-11-19 08:04:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:57,399 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1420 transitions. [2023-11-19 08:04:57,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1420 transitions. [2023-11-19 08:04:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 08:04:57,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:57,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:57,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:57,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:57,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:57,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash 672015314, now seen corresponding path program 1 times [2023-11-19 08:04:57,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:57,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299127501] [2023-11-19 08:04:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:57,605 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 [2023-11-19 08:04:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:57,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:57,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 08:04:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:57,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:57,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:57,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:57,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299127501] [2023-11-19 08:04:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299127501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:57,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676681725] [2023-11-19 08:04:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:57,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:57,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:57,801 INFO L87 Difference]: Start difference. First operand 1202 states and 1420 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 08:04:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:57,900 INFO L93 Difference]: Finished difference Result 1167 states and 1336 transitions. [2023-11-19 08:04:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:57,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-19 08:04:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:57,907 INFO L225 Difference]: With dead ends: 1167 [2023-11-19 08:04:57,908 INFO L226 Difference]: Without dead ends: 1167 [2023-11-19 08:04:57,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:57,909 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 62 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:57,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2774 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-11-19 08:04:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1164. [2023-11-19 08:04:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 753 states have (on average 1.7622841965471447) internal successors, (1327), 1159 states have internal predecessors, (1327), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1333 transitions. [2023-11-19 08:04:57,938 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1333 transitions. Word has length 16 [2023-11-19 08:04:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:57,938 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1333 transitions. [2023-11-19 08:04:57,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 08:04:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1333 transitions. [2023-11-19 08:04:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 08:04:57,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:57,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:57,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:58,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:58,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:58,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1783704328, now seen corresponding path program 1 times [2023-11-19 08:04:58,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:58,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288614773] [2023-11-19 08:04:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:58,144 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 [2023-11-19 08:04:58,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:58,145 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:58,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 08:04:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:58,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:04:58,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:58,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:58,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:58,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288614773] [2023-11-19 08:04:58,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288614773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:58,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:58,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:58,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954238844] [2023-11-19 08:04:58,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:58,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:58,384 INFO L87 Difference]: Start difference. First operand 1164 states and 1333 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:58,421 INFO L93 Difference]: Finished difference Result 1104 states and 1247 transitions. [2023-11-19 08:04:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:58,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 08:04:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:58,427 INFO L225 Difference]: With dead ends: 1104 [2023-11-19 08:04:58,427 INFO L226 Difference]: Without dead ends: 1104 [2023-11-19 08:04:58,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:58,428 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 81 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:58,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1734 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-11-19 08:04:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2023-11-19 08:04:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 717 states have (on average 1.7308228730822872) internal successors, (1241), 1099 states have internal predecessors, (1241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1247 transitions. [2023-11-19 08:04:58,452 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1247 transitions. Word has length 19 [2023-11-19 08:04:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:58,452 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1247 transitions. [2023-11-19 08:04:58,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1247 transitions. [2023-11-19 08:04:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 08:04:58,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:58,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:58,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:58,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:58,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:58,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 447904642, now seen corresponding path program 1 times [2023-11-19 08:04:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898023351] [2023-11-19 08:04:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:58,670 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 [2023-11-19 08:04:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:58,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:58,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 08:04:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:58,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:58,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:58,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:58,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898023351] [2023-11-19 08:04:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898023351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:58,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:58,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36390590] [2023-11-19 08:04:58,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:58,883 INFO L87 Difference]: Start difference. First operand 1104 states and 1247 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-19 08:04:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:58,962 INFO L93 Difference]: Finished difference Result 1076 states and 1191 transitions. [2023-11-19 08:04:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 08:04:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:58,972 INFO L225 Difference]: With dead ends: 1076 [2023-11-19 08:04:58,973 INFO L226 Difference]: Without dead ends: 1076 [2023-11-19 08:04:58,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:58,974 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 62 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:58,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2540 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:58,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-19 08:04:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2023-11-19 08:04:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 701 states have (on average 1.6875891583452212) internal successors, (1183), 1069 states have internal predecessors, (1183), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1189 transitions. [2023-11-19 08:04:58,998 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1189 transitions. Word has length 21 [2023-11-19 08:04:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:58,999 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1189 transitions. [2023-11-19 08:04:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-19 08:04:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1189 transitions. [2023-11-19 08:04:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:04:59,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:59,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:59,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:59,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:04:59,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr378REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:04:59,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -304556672, now seen corresponding path program 1 times [2023-11-19 08:04:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:59,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398617888] [2023-11-19 08:04:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:59,206 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 [2023-11-19 08:04:59,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:59,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:04:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-19 08:04:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:59,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:59,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:59,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 08:04:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:59,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:59,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:04:59,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398617888] [2023-11-19 08:04:59,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398617888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:59,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:59,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:59,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255997603] [2023-11-19 08:04:59,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:59,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:59,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:04:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:59,494 INFO L87 Difference]: Start difference. First operand 1074 states and 1189 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-19 08:05:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:01,787 INFO L93 Difference]: Finished difference Result 1249 states and 1365 transitions. [2023-11-19 08:05:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2023-11-19 08:05:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:01,793 INFO L225 Difference]: With dead ends: 1249 [2023-11-19 08:05:01,793 INFO L226 Difference]: Without dead ends: 1249 [2023-11-19 08:05:01,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:01,794 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 783 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:01,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1127 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:05:01,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-11-19 08:05:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1070. [2023-11-19 08:05:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 701 states have (on average 1.6704707560627674) internal successors, (1171), 1065 states have internal predecessors, (1171), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:05:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1177 transitions. [2023-11-19 08:05:01,816 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1177 transitions. Word has length 30 [2023-11-19 08:05:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:01,817 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1177 transitions. [2023-11-19 08:05:01,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-19 08:05:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1177 transitions. [2023-11-19 08:05:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:05:01,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:01,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:01,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-19 08:05:02,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:05:02,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr379REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:05:02,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -304556671, now seen corresponding path program 1 times [2023-11-19 08:05:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:05:02,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043408459] [2023-11-19 08:05:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:02,023 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 [2023-11-19 08:05:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:05:02,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:05:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-19 08:05:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:02,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:05:02,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:02,210 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 [2023-11-19 08:05:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:02,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:02,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:05:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043408459] [2023-11-19 08:05:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043408459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:02,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:02,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708804345] [2023-11-19 08:05:02,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:02,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:02,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:05:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:02,466 INFO L87 Difference]: Start difference. First operand 1070 states and 1177 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-19 08:05:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:05,395 INFO L93 Difference]: Finished difference Result 1073 states and 1175 transitions. [2023-11-19 08:05:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2023-11-19 08:05:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:05,399 INFO L225 Difference]: With dead ends: 1073 [2023-11-19 08:05:05,399 INFO L226 Difference]: Without dead ends: 1073 [2023-11-19 08:05:05,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:05,400 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 77 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:05,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1770 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 08:05:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-19 08:05:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1070. [2023-11-19 08:05:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 701 states have (on average 1.6647646219686163) internal successors, (1167), 1065 states have internal predecessors, (1167), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:05:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1173 transitions. [2023-11-19 08:05:05,421 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1173 transitions. Word has length 30 [2023-11-19 08:05:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:05,422 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1173 transitions. [2023-11-19 08:05:05,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-19 08:05:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1173 transitions. [2023-11-19 08:05:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 08:05:05,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:05,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:05,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-19 08:05:05,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:05:05,627 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-19 08:05:05,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1381258032, now seen corresponding path program 1 times [2023-11-19 08:05:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:05:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134063261] [2023-11-19 08:05:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:05,629 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 [2023-11-19 08:05:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:05:05,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 08:05:05,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5995fb75-4db9-480b-bfe6-9d43fc52917e/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-19 08:05:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:05:05,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:05,854 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 [2023-11-19 08:05:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:05,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:05,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:05:05,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134063261] [2023-11-19 08:05:05,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134063261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:05,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:05,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146805403] [2023-11-19 08:05:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:05,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:05,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:05:05,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:05,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:05,948 INFO L87 Difference]: Start difference. First operand 1070 states and 1173 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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)