./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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_837e1da5-735b-4667-94dc-65421b54bf86/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 f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:55,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:55,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:06:55,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:55,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:55,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:55,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:55,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:55,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:55,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:55,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:55,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:55,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:55,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:55,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:55,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:55,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:55,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:55,283 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:06:55,284 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:06:55,284 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:06:55,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:55,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:06:55,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:55,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:55,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:55,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:55,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:55,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:55,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:55,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:55,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:55,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:55,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:55,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:55,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:55,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:55,293 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:55,293 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_837e1da5-735b-4667-94dc-65421b54bf86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead [2023-11-19 08:06:55,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:55,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:55,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:55,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:55,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:55,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-11-19 08:06:58,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:59,056 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:59,057 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-11-19 08:06:59,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/96b2d87f5/b94d5e48524a42429552f97321e891fa/FLAG29fc3092b [2023-11-19 08:06:59,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/96b2d87f5/b94d5e48524a42429552f97321e891fa [2023-11-19 08:06:59,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:59,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:59,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:59,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:59,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:59,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cafe217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59, skipping insertion in model container [2023-11-19 08:06:59,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:59" (1/1) ... [2023-11-19 08:06:59,205 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:59,503 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:06:59,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:59,821 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 08:06:59,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27997feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:59, skipping insertion in model container [2023-11-19 08:06:59,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:59,823 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 08:06:59,825 INFO L158 Benchmark]: Toolchain (without parser) took 708.67ms. Allocated memory is still 184.5MB. Free memory was 150.6MB in the beginning and 133.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 08:06:59,826 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 184.5MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:06:59,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.75ms. Allocated memory is still 184.5MB. Free memory was 150.6MB in the beginning and 133.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 08:06:59,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 184.5MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.75ms. Allocated memory is still 184.5MB. Free memory was 150.6MB in the beginning and 133.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 738]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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_837e1da5-735b-4667-94dc-65421b54bf86/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 f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:07:02,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:07:02,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 08:07:02,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:07:02,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:07:02,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:07:02,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:07:02,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:07:02,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:07:02,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:07:02,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:07:02,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:07:02,436 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:07:02,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:07:02,438 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:07:02,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:07:02,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:07:02,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:07:02,439 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:07:02,440 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:07:02,440 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:07:02,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:07:02,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:07:02,441 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:07:02,442 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:07:02,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:07:02,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:07:02,443 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:07:02,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:07:02,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:07:02,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:07:02,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:02,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:07:02,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:07:02,447 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:07:02,447 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:07:02,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:07:02,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:07:02,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:07:02,449 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:07:02,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:07:02,449 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_837e1da5-735b-4667-94dc-65421b54bf86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead [2023-11-19 08:07:02,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:07:02,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:07:02,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:07:02,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:07:02,887 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:07:02,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-11-19 08:07:06,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:07:06,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:07:06,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-11-19 08:07:06,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/367bfce2d/5532140daf954464b67bc3f60de7650d/FLAG35250ac6d [2023-11-19 08:07:06,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/data/367bfce2d/5532140daf954464b67bc3f60de7650d [2023-11-19 08:07:06,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:07:06,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:07:06,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:06,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:07:06,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:07:06,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:06" (1/1) ... [2023-11-19 08:07:06,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20084f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:06, skipping insertion in model container [2023-11-19 08:07:06,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:06" (1/1) ... [2023-11-19 08:07:06,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:06,958 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:07:07,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:07,339 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 08:07:07,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:07,378 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:07:07,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:07,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:07:07,454 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:07:07,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:07,579 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:07:07,588 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:07:07,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07 WrapperNode [2023-11-19 08:07:07,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:07,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:07,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:07:07,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:07:07,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,704 INFO L138 Inliner]: procedures = 181, calls = 178, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 591 [2023-11-19 08:07:07,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:07,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:07:07,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:07:07,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:07:07,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:07:07,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:07:07,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:07:07,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:07:07,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:07,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:07:07,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:07:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:07:07,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:07:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:07:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:07:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:07:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:07:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:07:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:07:07,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:07:08,101 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:07:08,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:08,108 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 08:07:11,536 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:11,556 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:11,557 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 08:07:11,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:11 BoogieIcfgContainer [2023-11-19 08:07:11,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:11,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:11,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:11,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:11,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:06" (1/3) ... [2023-11-19 08:07:11,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25100f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:11, skipping insertion in model container [2023-11-19 08:07:11,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (2/3) ... [2023-11-19 08:07:11,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25100f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:11, skipping insertion in model container [2023-11-19 08:07:11,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:11" (3/3) ... [2023-11-19 08:07:11,578 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test1-1.i [2023-11-19 08:07:11,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:11,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-19 08:07:11,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:11,686 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;@bc941fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:11,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-19 08:07:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 652 states, 320 states have (on average 2.21875) internal successors, (710), 647 states have internal predecessors, (710), 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 08:07:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 08:07:11,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:11,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:11,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:11,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 08:07:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342075735] [2023-11-19 08:07:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:11,722 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 08:07:11,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:11,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:11,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:07:11,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:11,910 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 08:07:11,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:11,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:11,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342075735] [2023-11-19 08:07:11,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342075735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005005958] [2023-11-19 08:07:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:11,970 INFO L87 Difference]: Start difference. First operand has 652 states, 320 states have (on average 2.21875) internal successors, (710), 647 states have internal predecessors, (710), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:12,067 INFO L93 Difference]: Finished difference Result 642 states and 669 transitions. [2023-11-19 08:07:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 08:07:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:12,092 INFO L225 Difference]: With dead ends: 642 [2023-11-19 08:07:12,116 INFO L226 Difference]: Without dead ends: 640 [2023-11-19 08:07:12,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:12,125 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:12,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-19 08:07:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2023-11-19 08:07:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 314 states have (on average 2.105095541401274) internal successors, (661), 635 states have internal predecessors, (661), 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 08:07:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 667 transitions. [2023-11-19 08:07:12,215 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 667 transitions. Word has length 5 [2023-11-19 08:07:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:12,215 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 667 transitions. [2023-11-19 08:07:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 667 transitions. [2023-11-19 08:07:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 08:07:12,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:12,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:12,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:12,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:12,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 08:07:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312922669] [2023-11-19 08:07:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:12,420 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 08:07:12,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:12,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:12,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:12,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:12,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:12,601 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 08:07:12,621 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 08:07:12,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:12,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312922669] [2023-11-19 08:07:12,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312922669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:12,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:12,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017868944] [2023-11-19 08:07:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:12,633 INFO L87 Difference]: Start difference. First operand 640 states and 667 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:14,036 INFO L93 Difference]: Finished difference Result 601 states and 629 transitions. [2023-11-19 08:07:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:14,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 08:07:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:14,040 INFO L225 Difference]: With dead ends: 601 [2023-11-19 08:07:14,040 INFO L226 Difference]: Without dead ends: 601 [2023-11-19 08:07:14,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:14,042 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 579 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:14,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 317 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 08:07:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-19 08:07:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 591. [2023-11-19 08:07:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 314 states have (on average 1.9490445859872612) internal successors, (612), 586 states have internal predecessors, (612), 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 08:07:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 618 transitions. [2023-11-19 08:07:14,071 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 618 transitions. Word has length 5 [2023-11-19 08:07:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:14,071 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 618 transitions. [2023-11-19 08:07:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 618 transitions. [2023-11-19 08:07:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 08:07:14,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:14,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:14,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:14,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 08:07:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683352053] [2023-11-19 08:07:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,276 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 08:07:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:14,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:14,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:14,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:14,380 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 08:07:14,404 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 08:07:14,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:14,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:14,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683352053] [2023-11-19 08:07:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683352053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:14,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:14,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:14,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099727297] [2023-11-19 08:07:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:14,415 INFO L87 Difference]: Start difference. First operand 591 states and 618 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:16,079 INFO L93 Difference]: Finished difference Result 660 states and 691 transitions. [2023-11-19 08:07:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 08:07:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:16,091 INFO L225 Difference]: With dead ends: 660 [2023-11-19 08:07:16,092 INFO L226 Difference]: Without dead ends: 660 [2023-11-19 08:07:16,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:16,096 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 262 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:16,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 672 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 08:07:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-19 08:07:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 612. [2023-11-19 08:07:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 346 states have (on average 1.9277456647398843) internal successors, (667), 607 states have internal predecessors, (667), 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 08:07:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 673 transitions. [2023-11-19 08:07:16,131 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 673 transitions. Word has length 5 [2023-11-19 08:07:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:16,131 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 673 transitions. [2023-11-19 08:07:16,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 673 transitions. [2023-11-19 08:07:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 08:07:16,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:16,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:07:16,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:16,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:16,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1156743050, now seen corresponding path program 1 times [2023-11-19 08:07:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679345516] [2023-11-19 08:07:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:16,336 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 08:07:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:16,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:07:16,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:16,430 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 08:07:16,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:16,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679345516] [2023-11-19 08:07:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679345516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374054725] [2023-11-19 08:07:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:16,433 INFO L87 Difference]: Start difference. First operand 612 states and 673 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:16,501 INFO L93 Difference]: Finished difference Result 1200 states and 1321 transitions. [2023-11-19 08:07:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 08:07:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:16,510 INFO L225 Difference]: With dead ends: 1200 [2023-11-19 08:07:16,510 INFO L226 Difference]: Without dead ends: 1200 [2023-11-19 08:07:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 08:07:16,511 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 575 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:16,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2023-11-19 08:07:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 613. [2023-11-19 08:07:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 347 states have (on average 1.92507204610951) internal successors, (668), 608 states have internal predecessors, (668), 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 08:07:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 674 transitions. [2023-11-19 08:07:16,535 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 674 transitions. Word has length 6 [2023-11-19 08:07:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:16,535 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 674 transitions. [2023-11-19 08:07:16,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 674 transitions. [2023-11-19 08:07:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 08:07:16,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:16,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:16,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash 47654077, now seen corresponding path program 1 times [2023-11-19 08:07:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960106494] [2023-11-19 08:07:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:16,740 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 08:07:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:16,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:07:16,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:16,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:16,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960106494] [2023-11-19 08:07:16,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960106494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:16,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397313649] [2023-11-19 08:07:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:16,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:16,911 INFO L87 Difference]: Start difference. First operand 613 states and 674 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:16,973 INFO L93 Difference]: Finished difference Result 571 states and 631 transitions. [2023-11-19 08:07:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:16,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 08:07:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:16,982 INFO L225 Difference]: With dead ends: 571 [2023-11-19 08:07:16,983 INFO L226 Difference]: Without dead ends: 571 [2023-11-19 08:07:16,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:16,985 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 81 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1032 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 08:07:16,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1032 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-19 08:07:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2023-11-19 08:07:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 329 states have (on average 1.8996960486322187) internal successors, (625), 566 states have internal predecessors, (625), 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 08:07:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 631 transitions. [2023-11-19 08:07:17,010 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 631 transitions. Word has length 15 [2023-11-19 08:07:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:17,011 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 631 transitions. [2023-11-19 08:07:17,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 631 transitions. [2023-11-19 08:07:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 08:07:17,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:17,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:17,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:17,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1449076233, now seen corresponding path program 1 times [2023-11-19 08:07:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104637721] [2023-11-19 08:07:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,226 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 08:07:17,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:17,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:17,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:17,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:17,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104637721] [2023-11-19 08:07:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104637721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:17,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96806447] [2023-11-19 08:07:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:17,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:17,376 INFO L87 Difference]: Start difference. First operand 571 states and 631 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:17,471 INFO L93 Difference]: Finished difference Result 550 states and 603 transitions. [2023-11-19 08:07:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 08:07:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:17,475 INFO L225 Difference]: With dead ends: 550 [2023-11-19 08:07:17,475 INFO L226 Difference]: Without dead ends: 550 [2023-11-19 08:07:17,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:17,476 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 62 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1487 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 08:07:17,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1487 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-19 08:07:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2023-11-19 08:07:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 321 states have (on average 1.8566978193146417) internal successors, (596), 544 states have internal predecessors, (596), 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 08:07:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 602 transitions. [2023-11-19 08:07:17,492 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 602 transitions. Word has length 17 [2023-11-19 08:07:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:17,493 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 602 transitions. [2023-11-19 08:07:17,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 602 transitions. [2023-11-19 08:07:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:07:17,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:17,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:17,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:17,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -446198651, now seen corresponding path program 1 times [2023-11-19 08:07:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830693782] [2023-11-19 08:07:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,700 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 08:07:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:17,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:17,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:17,851 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 08:07:17,971 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 08:07:17,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:17,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:17,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830693782] [2023-11-19 08:07:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830693782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:17,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:17,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434574717] [2023-11-19 08:07:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:17,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:17,974 INFO L87 Difference]: Start difference. First operand 549 states and 602 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:19,653 INFO L93 Difference]: Finished difference Result 555 states and 609 transitions. [2023-11-19 08:07:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 08:07:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:19,657 INFO L225 Difference]: With dead ends: 555 [2023-11-19 08:07:19,657 INFO L226 Difference]: Without dead ends: 555 [2023-11-19 08:07:19,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:19,658 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 503 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:19,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 472 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 08:07:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-19 08:07:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 545. [2023-11-19 08:07:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 321 states have (on average 1.8442367601246106) internal successors, (592), 540 states have internal predecessors, (592), 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 08:07:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 598 transitions. [2023-11-19 08:07:19,675 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 598 transitions. Word has length 31 [2023-11-19 08:07:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:19,676 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 598 transitions. [2023-11-19 08:07:19,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 598 transitions. [2023-11-19 08:07:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:07:19,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:19,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:19,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:19,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:19,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash -446198650, now seen corresponding path program 1 times [2023-11-19 08:07:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248706963] [2023-11-19 08:07:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:19,882 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 08:07:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:19,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:19,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:20,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:20,047 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 08:07:20,349 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 08:07:20,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:20,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248706963] [2023-11-19 08:07:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248706963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957377327] [2023-11-19 08:07:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:20,351 INFO L87 Difference]: Start difference. First operand 545 states and 598 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:22,521 INFO L93 Difference]: Finished difference Result 589 states and 612 transitions. [2023-11-19 08:07:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:22,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 08:07:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:22,525 INFO L225 Difference]: With dead ends: 589 [2023-11-19 08:07:22,526 INFO L226 Difference]: Without dead ends: 589 [2023-11-19 08:07:22,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:22,526 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 189 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:22,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 838 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:07:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-19 08:07:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 541. [2023-11-19 08:07:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 321 states have (on average 1.8317757009345794) internal successors, (588), 536 states have internal predecessors, (588), 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 08:07:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 594 transitions. [2023-11-19 08:07:22,542 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 594 transitions. Word has length 31 [2023-11-19 08:07:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 594 transitions. [2023-11-19 08:07:22,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 594 transitions. [2023-11-19 08:07:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 08:07:22,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:22,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:22,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:22,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:22,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:22,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -289243905, now seen corresponding path program 1 times [2023-11-19 08:07:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050400893] [2023-11-19 08:07:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:22,749 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 08:07:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:22,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:22,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:22,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:23,014 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 08:07:23,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:23,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050400893] [2023-11-19 08:07:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050400893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487638220] [2023-11-19 08:07:23,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:23,018 INFO L87 Difference]: Start difference. First operand 541 states and 594 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 08:07:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:23,093 INFO L93 Difference]: Finished difference Result 535 states and 584 transitions. [2023-11-19 08:07:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-11-19 08:07:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:23,097 INFO L225 Difference]: With dead ends: 535 [2023-11-19 08:07:23,097 INFO L226 Difference]: Without dead ends: 535 [2023-11-19 08:07:23,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 08:07:23,098 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 31 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:23,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1465 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-19 08:07:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2023-11-19 08:07:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 315 states have (on average 1.8349206349206348) internal successors, (578), 530 states have internal predecessors, (578), 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 08:07:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 584 transitions. [2023-11-19 08:07:23,112 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 584 transitions. Word has length 47 [2023-11-19 08:07:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:23,113 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 584 transitions. [2023-11-19 08:07:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 08:07:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 584 transitions. [2023-11-19 08:07:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 08:07:23,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:23,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:23,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:23,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:23,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -572234293, now seen corresponding path program 1 times [2023-11-19 08:07:23,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:23,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309653264] [2023-11-19 08:07:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:23,320 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 08:07:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:23,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:23,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:23,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:23,951 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 08:07:23,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:23,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309653264] [2023-11-19 08:07:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309653264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:23,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715326522] [2023-11-19 08:07:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:23,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:23,953 INFO L87 Difference]: Start difference. First operand 535 states and 584 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 08:07:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:24,046 INFO L93 Difference]: Finished difference Result 586 states and 635 transitions. [2023-11-19 08:07:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-11-19 08:07:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:24,051 INFO L225 Difference]: With dead ends: 586 [2023-11-19 08:07:24,051 INFO L226 Difference]: Without dead ends: 586 [2023-11-19 08:07:24,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 08:07:24,052 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 67 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:24,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 936 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-19 08:07:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2023-11-19 08:07:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 366 states have (on average 1.7185792349726776) internal successors, (629), 581 states have internal predecessors, (629), 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 08:07:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 635 transitions. [2023-11-19 08:07:24,070 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 635 transitions. Word has length 55 [2023-11-19 08:07:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:24,070 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 635 transitions. [2023-11-19 08:07:24,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 08:07:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 635 transitions. [2023-11-19 08:07:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:07:24,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:24,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:24,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:24,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:24,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -814100751, now seen corresponding path program 1 times [2023-11-19 08:07:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425399502] [2023-11-19 08:07:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:24,279 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 08:07:24,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:24,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:24,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:24,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:07:24,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:24,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 08:07:24,720 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 08:07:25,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:25,451 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 08:07:25,475 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 08:07:25,475 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 08:07:25,492 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 08:07:25,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:25,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425399502] [2023-11-19 08:07:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425399502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:25,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348706265] [2023-11-19 08:07:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:25,494 INFO L87 Difference]: Start difference. First operand 586 states and 635 transitions. Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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 08:07:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:27,025 INFO L93 Difference]: Finished difference Result 558 states and 608 transitions. [2023-11-19 08:07:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2023-11-19 08:07:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:27,029 INFO L225 Difference]: With dead ends: 558 [2023-11-19 08:07:27,029 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 08:07:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 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 08:07:27,030 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 786 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 182 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 08:07:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 08:07:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 516. [2023-11-19 08:07:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 334 states have (on average 1.5718562874251496) internal successors, (525), 511 states have internal predecessors, (525), 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 08:07:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 531 transitions. [2023-11-19 08:07:27,043 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 531 transitions. Word has length 58 [2023-11-19 08:07:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:27,044 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 531 transitions. [2023-11-19 08:07:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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 08:07:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 531 transitions. [2023-11-19 08:07:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 08:07:27,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:27,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:27,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:27,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:27,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:27,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash 583834271, now seen corresponding path program 1 times [2023-11-19 08:07:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862863618] [2023-11-19 08:07:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:27,254 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 08:07:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:27,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:27,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:07:27,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:27,563 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 08:07:27,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 08:07:27,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 08:07:27,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 08:07:27,689 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 08:07:27,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:27,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862863618] [2023-11-19 08:07:27,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862863618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:27,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809506349] [2023-11-19 08:07:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:27,692 INFO L87 Difference]: Start difference. First operand 516 states and 531 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 08:07:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:30,080 INFO L93 Difference]: Finished difference Result 515 states and 530 transitions. [2023-11-19 08:07:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2023-11-19 08:07:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:30,084 INFO L225 Difference]: With dead ends: 515 [2023-11-19 08:07:30,084 INFO L226 Difference]: Without dead ends: 515 [2023-11-19 08:07:30,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:30,085 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 4 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:30,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1186 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:07:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-19 08:07:30,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2023-11-19 08:07:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 334 states have (on average 1.5688622754491017) internal successors, (524), 510 states have internal predecessors, (524), 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 08:07:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 530 transitions. [2023-11-19 08:07:30,099 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 530 transitions. Word has length 63 [2023-11-19 08:07:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:30,100 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 530 transitions. [2023-11-19 08:07:30,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 08:07:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 530 transitions. [2023-11-19 08:07:30,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 08:07:30,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:30,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:30,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:30,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:30,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:30,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 583834270, now seen corresponding path program 1 times [2023-11-19 08:07:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288804709] [2023-11-19 08:07:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:30,320 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 08:07:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:30,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:30,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:30,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:30,605 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 08:07:30,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 08:07:30,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 08:07:30,678 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 08:07:30,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:30,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288804709] [2023-11-19 08:07:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288804709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:30,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:30,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751558369] [2023-11-19 08:07:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:30,681 INFO L87 Difference]: Start difference. First operand 515 states and 530 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 08:07:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:32,493 INFO L93 Difference]: Finished difference Result 514 states and 529 transitions. [2023-11-19 08:07:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2023-11-19 08:07:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:32,497 INFO L225 Difference]: With dead ends: 514 [2023-11-19 08:07:32,497 INFO L226 Difference]: Without dead ends: 514 [2023-11-19 08:07:32,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:32,498 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:32,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1174 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 08:07:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-11-19 08:07:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2023-11-19 08:07:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 333 states have (on average 1.5705705705705706) internal successors, (523), 509 states have internal predecessors, (523), 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 08:07:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 529 transitions. [2023-11-19 08:07:32,511 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 529 transitions. Word has length 63 [2023-11-19 08:07:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:32,511 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 529 transitions. [2023-11-19 08:07:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 08:07:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 529 transitions. [2023-11-19 08:07:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 08:07:32,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:32,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:32,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Ended with exit code 0 [2023-11-19 08:07:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:32,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:32,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash 175266213, now seen corresponding path program 1 times [2023-11-19 08:07:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567775421] [2023-11-19 08:07:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:32,719 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 08:07:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:32,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:32,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:33,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:33,025 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 08:07:33,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:33,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567775421] [2023-11-19 08:07:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567775421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:33,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662787833] [2023-11-19 08:07:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:33,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:33,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:33,028 INFO L87 Difference]: Start difference. First operand 514 states and 529 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:07:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:33,076 INFO L93 Difference]: Finished difference Result 517 states and 533 transitions. [2023-11-19 08:07:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-11-19 08:07:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:33,082 INFO L225 Difference]: With dead ends: 517 [2023-11-19 08:07:33,082 INFO L226 Difference]: Without dead ends: 517 [2023-11-19 08:07:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 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 08:07:33,083 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1417 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-19 08:07:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2023-11-19 08:07:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 335 states have (on average 1.5701492537313433) internal successors, (526), 512 states have internal predecessors, (526), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:07:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 533 transitions. [2023-11-19 08:07:33,096 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 533 transitions. Word has length 71 [2023-11-19 08:07:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:33,097 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 533 transitions. [2023-11-19 08:07:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:07:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 533 transitions. [2023-11-19 08:07:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 08:07:33,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:33,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:33,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:33,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:33,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924598, now seen corresponding path program 1 times [2023-11-19 08:07:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597998718] [2023-11-19 08:07:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:33,313 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 08:07:33,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:33,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:33,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:33,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:07:33,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:33,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:33,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597998718] [2023-11-19 08:07:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597998718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:33,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 08:07:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124772797] [2023-11-19 08:07:33,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:33,716 INFO L87 Difference]: Start difference. First operand 517 states and 533 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:33,913 INFO L93 Difference]: Finished difference Result 529 states and 550 transitions. [2023-11-19 08:07:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:07:33,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2023-11-19 08:07:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:33,917 INFO L225 Difference]: With dead ends: 529 [2023-11-19 08:07:33,917 INFO L226 Difference]: Without dead ends: 529 [2023-11-19 08:07:33,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:33,918 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 12 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:33,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1421 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:07:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-19 08:07:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2023-11-19 08:07:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 344 states have (on average 1.572674418604651) internal successors, (541), 521 states have internal predecessors, (541), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:07:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 548 transitions. [2023-11-19 08:07:33,933 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 548 transitions. Word has length 72 [2023-11-19 08:07:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:33,933 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 548 transitions. [2023-11-19 08:07:33,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 548 transitions. [2023-11-19 08:07:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 08:07:33,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:33,935 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:33,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:34,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:34,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:34,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash -746419483, now seen corresponding path program 2 times [2023-11-19 08:07:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:34,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939551894] [2023-11-19 08:07:34,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:07:34,142 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 08:07:34,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:34,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:34,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:34,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:07:34,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:34,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:07:34,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:34,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:34,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939551894] [2023-11-19 08:07:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939551894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:34,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 08:07:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116837684] [2023-11-19 08:07:34,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:07:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:07:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:07:34,937 INFO L87 Difference]: Start difference. First operand 527 states and 548 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:35,598 INFO L93 Difference]: Finished difference Result 548 states and 576 transitions. [2023-11-19 08:07:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 08:07:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2023-11-19 08:07:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:35,602 INFO L225 Difference]: With dead ends: 548 [2023-11-19 08:07:35,602 INFO L226 Difference]: Without dead ends: 544 [2023-11-19 08:07:35,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-19 08:07:35,603 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 24 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:35,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2852 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:07:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-11-19 08:07:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 536. [2023-11-19 08:07:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 353 states have (on average 1.56657223796034) internal successors, (553), 530 states have internal predecessors, (553), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:07:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 560 transitions. [2023-11-19 08:07:35,617 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 560 transitions. Word has length 75 [2023-11-19 08:07:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:35,617 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 560 transitions. [2023-11-19 08:07:35,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 560 transitions. [2023-11-19 08:07:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 08:07:35,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:35,618 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:35,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:35,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 728623301, now seen corresponding path program 3 times [2023-11-19 08:07:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099214182] [2023-11-19 08:07:35,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:07:35,827 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 08:07:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:35,828 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:35,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 (18)] Waiting until timeout for monitored process [2023-11-19 08:07:36,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-19 08:07:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:36,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 08:07:36,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:36,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:37,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099214182] [2023-11-19 08:07:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099214182] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:37,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:37,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-19 08:07:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049974232] [2023-11-19 08:07:37,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:37,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 08:07:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 08:07:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-19 08:07:37,471 INFO L87 Difference]: Start difference. First operand 536 states and 560 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:40,237 INFO L93 Difference]: Finished difference Result 578 states and 622 transitions. [2023-11-19 08:07:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 08:07:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-19 08:07:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:40,241 INFO L225 Difference]: With dead ends: 578 [2023-11-19 08:07:40,242 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 08:07:40,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 08:07:40,243 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 58 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6221 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:40,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6221 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:07:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 08:07:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 554. [2023-11-19 08:07:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 371 states have (on average 1.5525606469002695) internal successors, (576), 548 states have internal predecessors, (576), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:07:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 583 transitions. [2023-11-19 08:07:40,258 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 583 transitions. Word has length 81 [2023-11-19 08:07:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:40,259 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 583 transitions. [2023-11-19 08:07:40,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:07:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 583 transitions. [2023-11-19 08:07:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 08:07:40,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:40,260 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:40,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:40,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 08:07:40,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1350505339, now seen corresponding path program 4 times [2023-11-19 08:07:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666500237] [2023-11-19 08:07:40,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:07:40,469 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 08:07:40,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:40,471 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 08:07:40,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_837e1da5-735b-4667-94dc-65421b54bf86/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 (19)] Waiting until timeout for monitored process [2023-11-19 08:07:40,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:07:40,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:40,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:07:40,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:41,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:43,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666500237] [2023-11-19 08:07:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666500237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:43,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-19 08:07:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269980247] [2023-11-19 08:07:43,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-19 08:07:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-19 08:07:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 08:07:43,181 INFO L87 Difference]: Start difference. First operand 554 states and 583 transitions. Second operand has 50 states, 50 states have (on average 2.32) internal successors, (116), 50 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)