./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:04,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:04,905 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:28:04,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:04,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:04,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:04,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:04,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:04,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:04,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:04,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:04,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:04,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:04,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:04,966 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:04,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:04,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:04,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:04,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:04,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:04,969 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:28:04,969 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:28:04,970 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:28:04,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:04,971 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:28:04,971 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:28:04,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:04,972 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:04,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:04,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:04,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:04,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:04,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:04,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:04,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:04,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:04,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:04,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:04,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:04,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:04,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:04,978 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_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2023-11-24 21:28:05,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:05,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:05,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:05,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:05,398 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:05,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-11-24 21:28:08,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:08,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:08,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-11-24 21:28:08,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/f7bde037d/117f11f153fb4d89b9b241c3f5b5241a/FLAG9beb0414a [2023-11-24 21:28:09,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/f7bde037d/117f11f153fb4d89b9b241c3f5b5241a [2023-11-24 21:28:09,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:09,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:09,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:09,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:09,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:09,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:09,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d17bcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09, skipping insertion in model container [2023-11-24 21:28:09,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:09,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:09,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:09,705 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:28:09,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b0f49ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09, skipping insertion in model container [2023-11-24 21:28:09,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:09,707 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:28:09,709 INFO L158 Benchmark]: Toolchain (without parser) took 689.54ms. Allocated memory is still 138.4MB. Free memory was 99.0MB in the beginning and 83.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:28:09,709 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:28:09,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.82ms. Allocated memory is still 138.4MB. Free memory was 98.4MB in the beginning and 83.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:28:09,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.82ms. Allocated memory is still 138.4MB. Free memory was 98.4MB in the beginning and 83.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:12,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:12,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:28:12,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:12,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:12,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:12,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:12,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:12,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:12,518 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:12,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:12,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:12,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:12,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:12,522 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:12,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:12,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:12,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:12,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:12,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:12,526 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:28:12,526 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:28:12,527 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:28:12,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:12,527 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:28:12,528 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:28:12,528 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:28:12,529 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:28:12,529 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:12,530 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:12,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:12,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:12,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:12,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:12,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:12,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:12,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:12,534 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:28:12,535 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:28:12,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:12,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:12,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:12,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:12,536 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:28:12,536 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_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2023-11-24 21:28:12,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:12,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:12,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:12,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:12,966 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:12,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-11-24 21:28:16,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:16,552 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:16,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-11-24 21:28:16,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/47773c7df/aa959886d9b143cbbe71131a7fbd5cd1/FLAG1873523c7 [2023-11-24 21:28:16,585 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/data/47773c7df/aa959886d9b143cbbe71131a7fbd5cd1 [2023-11-24 21:28:16,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:16,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:16,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:16,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:16,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:16,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:16" (1/1) ... [2023-11-24 21:28:16,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7560e24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:16, skipping insertion in model container [2023-11-24 21:28:16,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:16" (1/1) ... [2023-11-24 21:28:16,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:17,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:17,164 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:28:17,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:17,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:17,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:17,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:17,362 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:28:17,371 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:17,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17 WrapperNode [2023-11-24 21:28:17,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:17,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:17,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:17,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:17,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,466 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 188 [2023-11-24 21:28:17,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:17,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:17,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:17,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:17,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,551 INFO L175 MemorySlicer]: Split 35 memory accesses to 3 slices as follows [2, 4, 29]. 83 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2]. The 17 writes are split as follows [0, 4, 13]. [2023-11-24 21:28:17,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:17,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:17,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:17,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:17,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (1/1) ... [2023-11-24 21:28:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:17,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:17,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:28:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:28:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:28:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:28:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:28:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-24 21:28:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-24 21:28:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 21:28:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 21:28:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:28:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-24 21:28:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-24 21:28:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:28:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:28:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:28:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:28:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:28:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:28:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:28:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:28:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:28:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:28:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:28:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:28:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:28:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:28:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-24 21:28:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-24 21:28:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 21:28:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 21:28:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:17,891 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:17,893 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:28:18,820 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:28:18,941 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:28:18,943 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:28:18,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:18 BoogieIcfgContainer [2023-11-24 21:28:18,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:28:18,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:28:18,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:28:18,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:28:18,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:16" (1/3) ... [2023-11-24 21:28:18,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a39e469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:18, skipping insertion in model container [2023-11-24 21:28:18,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:17" (2/3) ... [2023-11-24 21:28:18,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a39e469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:18, skipping insertion in model container [2023-11-24 21:28:18,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:18" (3/3) ... [2023-11-24 21:28:18,955 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2023-11-24 21:28:18,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:28:18,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-24 21:28:19,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:28:19,050 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;@486d59d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:28:19,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-24 21:28:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 80 states have (on average 2.125) internal successors, (170), 156 states have internal predecessors, (170), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:28:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:28:19,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:19,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:19,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:19,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2103070519, now seen corresponding path program 1 times [2023-11-24 21:28:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:19,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524008829] [2023-11-24 21:28:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:19,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:19,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:19,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:28:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:19,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:19,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:19,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:19,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:19,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524008829] [2023-11-24 21:28:19,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524008829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:19,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:19,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:28:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531278846] [2023-11-24 21:28:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:19,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:19,460 INFO L87 Difference]: Start difference. First operand has 171 states, 80 states have (on average 2.125) internal successors, (170), 156 states have internal predecessors, (170), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:20,586 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2023-11-24 21:28:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:20,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:28:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:20,604 INFO L225 Difference]: With dead ends: 186 [2023-11-24 21:28:20,604 INFO L226 Difference]: Without dead ends: 185 [2023-11-24 21:28:20,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:28:20,617 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 14 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:20,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 631 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:28:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-24 21:28:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 178. [2023-11-24 21:28:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 86 states have (on average 2.0348837209302326) internal successors, (175), 161 states have internal predecessors, (175), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-24 21:28:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2023-11-24 21:28:20,715 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 11 [2023-11-24 21:28:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2023-11-24 21:28:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2023-11-24 21:28:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:28:20,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:20,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:20,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:20,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2103070518, now seen corresponding path program 1 times [2023-11-24 21:28:20,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387447720] [2023-11-24 21:28:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:20,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:20,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:28:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:21,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:28:21,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:21,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:28:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:21,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:21,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387447720] [2023-11-24 21:28:21,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387447720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:21,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:21,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:28:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343450702] [2023-11-24 21:28:21,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:21,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:28:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:28:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:28:21,236 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:22,695 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2023-11-24 21:28:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:28:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:22,700 INFO L225 Difference]: With dead ends: 182 [2023-11-24 21:28:22,700 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 21:28:22,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:28:22,702 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 12 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:22,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 823 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 21:28:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 21:28:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2023-11-24 21:28:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 86 states have (on average 2.011627906976744) internal successors, (173), 161 states have internal predecessors, (173), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-24 21:28:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2023-11-24 21:28:22,720 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 11 [2023-11-24 21:28:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:22,720 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2023-11-24 21:28:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2023-11-24 21:28:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:28:22,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:22,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:22,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:22,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:22,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:22,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash -360260184, now seen corresponding path program 1 times [2023-11-24 21:28:22,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51752654] [2023-11-24 21:28:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:22,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:22,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:22,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:22,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:28:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:23,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:23,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:23,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:23,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51752654] [2023-11-24 21:28:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51752654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:23,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121311533] [2023-11-24 21:28:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:23,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:23,164 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:23,579 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2023-11-24 21:28:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:28:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:23,584 INFO L225 Difference]: With dead ends: 171 [2023-11-24 21:28:23,584 INFO L226 Difference]: Without dead ends: 171 [2023-11-24 21:28:23,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:23,586 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:23,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:28:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-24 21:28:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2023-11-24 21:28:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 83 states have (on average 2.0) internal successors, (166), 154 states have internal predecessors, (166), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:28:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2023-11-24 21:28:23,614 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 11 [2023-11-24 21:28:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:23,614 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2023-11-24 21:28:23,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:28:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2023-11-24 21:28:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:28:23,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:23,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:23,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:23,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:23,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:23,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2103156663, now seen corresponding path program 1 times [2023-11-24 21:28:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55310323] [2023-11-24 21:28:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:23,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:23,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:28:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:23,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:28:23,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:23,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:23,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55310323] [2023-11-24 21:28:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55310323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:23,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:23,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283167940] [2023-11-24 21:28:23,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:23,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:23,981 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-24 21:28:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:24,368 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2023-11-24 21:28:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2023-11-24 21:28:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:24,370 INFO L225 Difference]: With dead ends: 171 [2023-11-24 21:28:24,370 INFO L226 Difference]: Without dead ends: 171 [2023-11-24 21:28:24,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:24,372 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 89 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:24,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 517 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:28:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-24 21:28:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2023-11-24 21:28:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 83 states have (on average 1.9879518072289157) internal successors, (165), 154 states have internal predecessors, (165), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:28:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 182 transitions. [2023-11-24 21:28:24,387 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 182 transitions. Word has length 11 [2023-11-24 21:28:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:24,387 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 182 transitions. [2023-11-24 21:28:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-24 21:28:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 182 transitions. [2023-11-24 21:28:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:28:24,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:24,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:24,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:24,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:24,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:24,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:24,592 INFO L85 PathProgramCache]: Analyzing trace with hash -360346328, now seen corresponding path program 1 times [2023-11-24 21:28:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033135573] [2023-11-24 21:28:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:24,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:24,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:24,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:24,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:28:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:24,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:28:24,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:24,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:24,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033135573] [2023-11-24 21:28:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033135573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:24,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:24,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093216822] [2023-11-24 21:28:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:24,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:24,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:24,744 INFO L87 Difference]: Start difference. First operand 170 states and 182 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-24 21:28:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:25,141 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2023-11-24 21:28:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:28:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2023-11-24 21:28:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:25,143 INFO L225 Difference]: With dead ends: 175 [2023-11-24 21:28:25,143 INFO L226 Difference]: Without dead ends: 175 [2023-11-24 21:28:25,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:25,145 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 86 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:25,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 527 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:28:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-24 21:28:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2023-11-24 21:28:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 85 states have (on average 1.964705882352941) internal successors, (167), 156 states have internal predecessors, (167), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:28:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2023-11-24 21:28:25,156 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 11 [2023-11-24 21:28:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:25,156 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2023-11-24 21:28:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-24 21:28:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2023-11-24 21:28:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:28:25,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:25,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:25,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:25,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:25,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:25,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1714185826, now seen corresponding path program 1 times [2023-11-24 21:28:25,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869174465] [2023-11-24 21:28:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:25,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:25,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:28:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:25,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:28:25,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:25,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:25,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869174465] [2023-11-24 21:28:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869174465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:25,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206957226] [2023-11-24 21:28:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:25,499 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-24 21:28:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:26,130 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2023-11-24 21:28:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-24 21:28:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:26,135 INFO L225 Difference]: With dead ends: 184 [2023-11-24 21:28:26,135 INFO L226 Difference]: Without dead ends: 176 [2023-11-24 21:28:26,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:26,137 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:26,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 288 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 21:28:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-24 21:28:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2023-11-24 21:28:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 80 states have (on average 2.0125) internal successors, (161), 151 states have internal predecessors, (161), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:28:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 177 transitions. [2023-11-24 21:28:26,147 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 177 transitions. Word has length 12 [2023-11-24 21:28:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:26,148 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 177 transitions. [2023-11-24 21:28:26,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-24 21:28:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 177 transitions. [2023-11-24 21:28:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:28:26,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:26,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:26,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:26,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:26,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1885625366, now seen corresponding path program 1 times [2023-11-24 21:28:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939405167] [2023-11-24 21:28:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:26,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:26,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:26,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:26,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:28:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:26,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:28:26,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:26,568 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-24 21:28:26,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:26,644 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 [2023-11-24 21:28:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:26,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:26,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939405167] [2023-11-24 21:28:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939405167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848744351] [2023-11-24 21:28:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:26,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:26,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:28:26,719 INFO L87 Difference]: Start difference. First operand 166 states and 177 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:28:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:27,585 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2023-11-24 21:28:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-24 21:28:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:27,589 INFO L225 Difference]: With dead ends: 176 [2023-11-24 21:28:27,589 INFO L226 Difference]: Without dead ends: 176 [2023-11-24 21:28:27,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=27, Unknown=1, NotChecked=10, Total=56 [2023-11-24 21:28:27,591 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 47 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:27,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 234 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 249 Invalid, 0 Unknown, 195 Unchecked, 0.8s Time] [2023-11-24 21:28:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-24 21:28:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 165. [2023-11-24 21:28:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 80 states have (on average 2.0) internal successors, (160), 150 states have internal predecessors, (160), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:28:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2023-11-24 21:28:27,610 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 14 [2023-11-24 21:28:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:27,610 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2023-11-24 21:28:27,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:28:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2023-11-24 21:28:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:28:27,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:27,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:27,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:27,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:27,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:27,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1885625367, now seen corresponding path program 1 times [2023-11-24 21:28:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:27,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674725641] [2023-11-24 21:28:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:27,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:27,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:27,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:27,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:28:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:27,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:28:27,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:28,093 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:28:28,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:28:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:28,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:28,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674725641] [2023-11-24 21:28:28,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674725641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:28,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:28,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:28,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926038658] [2023-11-24 21:28:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:28,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:28,158 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:28:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:29,529 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2023-11-24 21:28:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-24 21:28:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:29,533 INFO L225 Difference]: With dead ends: 212 [2023-11-24 21:28:29,533 INFO L226 Difference]: Without dead ends: 212 [2023-11-24 21:28:29,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:28:29,534 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:29,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 338 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:28:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-24 21:28:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 173. [2023-11-24 21:28:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 157 states have internal predecessors, (172), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 21:28:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2023-11-24 21:28:29,544 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 14 [2023-11-24 21:28:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:29,545 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2023-11-24 21:28:29,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:28:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2023-11-24 21:28:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:28:29,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:29,546 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] [2023-11-24 21:28:29,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:29,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:29,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:29,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:29,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1073599557, now seen corresponding path program 1 times [2023-11-24 21:28:29,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:29,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168436620] [2023-11-24 21:28:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:29,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:29,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:28:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:29,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:28:29,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:29,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:29,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:29,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168436620] [2023-11-24 21:28:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168436620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:29,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:29,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481876604] [2023-11-24 21:28:29,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:29,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:29,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:29,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:29,946 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:30,786 INFO L93 Difference]: Finished difference Result 215 states and 239 transitions. [2023-11-24 21:28:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:30,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-11-24 21:28:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:30,789 INFO L225 Difference]: With dead ends: 215 [2023-11-24 21:28:30,789 INFO L226 Difference]: Without dead ends: 215 [2023-11-24 21:28:30,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:30,790 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 52 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:30,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 389 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:28:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-24 21:28:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 190. [2023-11-24 21:28:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 106 states have (on average 2.009433962264151) internal successors, (213), 174 states have internal predecessors, (213), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 21:28:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 231 transitions. [2023-11-24 21:28:30,800 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 231 transitions. Word has length 20 [2023-11-24 21:28:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:30,801 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 231 transitions. [2023-11-24 21:28:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 231 transitions. [2023-11-24 21:28:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:28:30,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:30,802 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] [2023-11-24 21:28:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:31,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:31,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1073599558, now seen corresponding path program 1 times [2023-11-24 21:28:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048071632] [2023-11-24 21:28:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:31,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:31,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:31,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:28:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:31,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:28:31,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:31,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:28:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:31,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:31,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048071632] [2023-11-24 21:28:31,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048071632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:31,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:31,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244926702] [2023-11-24 21:28:31,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:31,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:31,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:31,267 INFO L87 Difference]: Start difference. First operand 190 states and 231 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:32,228 INFO L93 Difference]: Finished difference Result 219 states and 243 transitions. [2023-11-24 21:28:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-11-24 21:28:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:32,230 INFO L225 Difference]: With dead ends: 219 [2023-11-24 21:28:32,231 INFO L226 Difference]: Without dead ends: 219 [2023-11-24 21:28:32,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:32,232 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:32,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 384 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:28:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-24 21:28:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 192. [2023-11-24 21:28:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 109 states have (on average 1.9724770642201834) internal successors, (215), 175 states have internal predecessors, (215), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 236 transitions. [2023-11-24 21:28:32,241 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 236 transitions. Word has length 20 [2023-11-24 21:28:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:32,242 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 236 transitions. [2023-11-24 21:28:32,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 236 transitions. [2023-11-24 21:28:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 21:28:32,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:32,243 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] [2023-11-24 21:28:32,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:32,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:32,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:32,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 937085314, now seen corresponding path program 1 times [2023-11-24 21:28:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199394660] [2023-11-24 21:28:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:32,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:32,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:32,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:32,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:28:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:32,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:28:32,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:32,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:32,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:32,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199394660] [2023-11-24 21:28:32,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199394660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:32,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:32,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:32,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110338739] [2023-11-24 21:28:32,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:32,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:32,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:32,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:32,604 INFO L87 Difference]: Start difference. First operand 192 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:32,958 INFO L93 Difference]: Finished difference Result 192 states and 235 transitions. [2023-11-24 21:28:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-24 21:28:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:32,960 INFO L225 Difference]: With dead ends: 192 [2023-11-24 21:28:32,960 INFO L226 Difference]: Without dead ends: 192 [2023-11-24 21:28:32,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:32,961 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 70 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:32,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 486 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:28:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-24 21:28:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-11-24 21:28:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 109 states have (on average 1.963302752293578) internal successors, (214), 175 states have internal predecessors, (214), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 235 transitions. [2023-11-24 21:28:32,969 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 235 transitions. Word has length 22 [2023-11-24 21:28:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:32,970 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 235 transitions. [2023-11-24 21:28:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 235 transitions. [2023-11-24 21:28:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:28:32,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:32,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:32,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:33,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:33,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 866495384, now seen corresponding path program 1 times [2023-11-24 21:28:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290486856] [2023-11-24 21:28:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:33,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:33,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:33,174 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:33,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:28:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:33,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:28:33,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:33,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:33,427 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:28:33,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:28:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:33,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:33,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290486856] [2023-11-24 21:28:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290486856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:33,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:28:33,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373344149] [2023-11-24 21:28:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:33,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:33,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:33,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:33,517 INFO L87 Difference]: Start difference. First operand 192 states and 235 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:34,531 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2023-11-24 21:28:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-24 21:28:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:34,534 INFO L225 Difference]: With dead ends: 204 [2023-11-24 21:28:34,535 INFO L226 Difference]: Without dead ends: 204 [2023-11-24 21:28:34,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:28:34,536 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:34,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:28:34,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-24 21:28:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2023-11-24 21:28:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 109 states have (on average 1.889908256880734) internal successors, (206), 171 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 227 transitions. [2023-11-24 21:28:34,550 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 227 transitions. Word has length 26 [2023-11-24 21:28:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:34,551 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 227 transitions. [2023-11-24 21:28:34,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 227 transitions. [2023-11-24 21:28:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:28:34,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:34,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:34,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:34,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:34,758 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:34,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 866495385, now seen corresponding path program 1 times [2023-11-24 21:28:34,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:34,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109069314] [2023-11-24 21:28:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:34,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:34,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:34,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:34,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:28:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:35,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 21:28:35,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:35,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:35,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:28:35,102 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-11-24 21:28:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:35,129 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 [2023-11-24 21:28:35,146 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:28:35,147 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 [2023-11-24 21:28:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:35,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:35,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109069314] [2023-11-24 21:28:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109069314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:35,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:28:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681804353] [2023-11-24 21:28:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:28:35,245 INFO L87 Difference]: Start difference. First operand 188 states and 227 transitions. Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:36,444 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2023-11-24 21:28:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:36,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-24 21:28:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:36,459 INFO L225 Difference]: With dead ends: 213 [2023-11-24 21:28:36,459 INFO L226 Difference]: Without dead ends: 213 [2023-11-24 21:28:36,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2023-11-24 21:28:36,461 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 92 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:36,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 278 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 375 Invalid, 0 Unknown, 239 Unchecked, 1.2s Time] [2023-11-24 21:28:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-24 21:28:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 188. [2023-11-24 21:28:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 109 states have (on average 1.853211009174312) internal successors, (202), 171 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2023-11-24 21:28:36,487 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 26 [2023-11-24 21:28:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:36,489 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2023-11-24 21:28:36,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2023-11-24 21:28:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 21:28:36,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:36,495 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] [2023-11-24 21:28:36,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-24 21:28:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:36,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash -521630740, now seen corresponding path program 1 times [2023-11-24 21:28:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563650444] [2023-11-24 21:28:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:36,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:36,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:36,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:28:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:36,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:28:36,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:36,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:36,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563650444] [2023-11-24 21:28:36,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563650444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:36,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:36,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:36,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609419508] [2023-11-24 21:28:36,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:36,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:36,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:36,920 INFO L87 Difference]: Start difference. First operand 188 states and 223 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:37,268 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2023-11-24 21:28:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-24 21:28:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:37,271 INFO L225 Difference]: With dead ends: 228 [2023-11-24 21:28:37,271 INFO L226 Difference]: Without dead ends: 228 [2023-11-24 21:28:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:37,272 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:37,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 417 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:28:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-24 21:28:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 192. [2023-11-24 21:28:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.823008849557522) internal successors, (206), 175 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 227 transitions. [2023-11-24 21:28:37,283 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 227 transitions. Word has length 28 [2023-11-24 21:28:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:37,284 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 227 transitions. [2023-11-24 21:28:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 227 transitions. [2023-11-24 21:28:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:28:37,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:37,285 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] [2023-11-24 21:28:37,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:37,489 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:37,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:37,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1009316173, now seen corresponding path program 1 times [2023-11-24 21:28:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:37,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288760021] [2023-11-24 21:28:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:37,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:37,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:37,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:28:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:37,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:28:37,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:38,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:38,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288760021] [2023-11-24 21:28:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288760021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:38,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:38,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:38,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153381933] [2023-11-24 21:28:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:38,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:38,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:38,097 INFO L87 Difference]: Start difference. First operand 192 states and 227 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:39,071 INFO L93 Difference]: Finished difference Result 190 states and 224 transitions. [2023-11-24 21:28:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:39,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-24 21:28:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:39,073 INFO L225 Difference]: With dead ends: 190 [2023-11-24 21:28:39,074 INFO L226 Difference]: Without dead ends: 190 [2023-11-24 21:28:39,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:39,075 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 186 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:39,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 397 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:28:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-24 21:28:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-24 21:28:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 173 states have internal predecessors, (203), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2023-11-24 21:28:39,083 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 29 [2023-11-24 21:28:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:39,083 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2023-11-24 21:28:39,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:28:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2023-11-24 21:28:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 21:28:39,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:39,085 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] [2023-11-24 21:28:39,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:39,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:39,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:39,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 509532548, now seen corresponding path program 1 times [2023-11-24 21:28:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:39,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070999932] [2023-11-24 21:28:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:39,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:39,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:39,290 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:39,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 21:28:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:39,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:28:39,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:39,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:39,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:39,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070999932] [2023-11-24 21:28:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070999932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:39,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:39,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995258478] [2023-11-24 21:28:39,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:39,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:39,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:39,623 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:40,437 INFO L93 Difference]: Finished difference Result 201 states and 224 transitions. [2023-11-24 21:28:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-11-24 21:28:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:40,440 INFO L225 Difference]: With dead ends: 201 [2023-11-24 21:28:40,440 INFO L226 Difference]: Without dead ends: 201 [2023-11-24 21:28:40,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:40,441 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 55 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 462 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:28:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-24 21:28:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2023-11-24 21:28:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 172 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 221 transitions. [2023-11-24 21:28:40,452 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 221 transitions. Word has length 32 [2023-11-24 21:28:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:40,452 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 221 transitions. [2023-11-24 21:28:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 221 transitions. [2023-11-24 21:28:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 21:28:40,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:40,454 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] [2023-11-24 21:28:40,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-24 21:28:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:40,660 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:40,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash 509532549, now seen corresponding path program 1 times [2023-11-24 21:28:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463813003] [2023-11-24 21:28:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:40,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:40,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:40,662 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:40,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-24 21:28:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:40,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 21:28:40,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:40,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:28:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:41,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:41,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463813003] [2023-11-24 21:28:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463813003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:41,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:41,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285580281] [2023-11-24 21:28:41,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:41,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:41,105 INFO L87 Difference]: Start difference. First operand 189 states and 221 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:42,216 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2023-11-24 21:28:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:28:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-11-24 21:28:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:42,219 INFO L225 Difference]: With dead ends: 202 [2023-11-24 21:28:42,219 INFO L226 Difference]: Without dead ends: 202 [2023-11-24 21:28:42,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:42,220 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 44 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:42,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 455 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 21:28:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-24 21:28:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2023-11-24 21:28:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 113 states have (on average 1.752212389380531) internal successors, (198), 172 states have internal predecessors, (198), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 219 transitions. [2023-11-24 21:28:42,230 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 219 transitions. Word has length 32 [2023-11-24 21:28:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:42,230 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 219 transitions. [2023-11-24 21:28:42,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 219 transitions. [2023-11-24 21:28:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:28:42,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:42,232 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] [2023-11-24 21:28:42,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:42,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:42,443 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:42,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 821489088, now seen corresponding path program 1 times [2023-11-24 21:28:42,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:42,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047496796] [2023-11-24 21:28:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:42,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:42,446 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:42,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-24 21:28:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:42,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:28:42,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:42,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:42,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047496796] [2023-11-24 21:28:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047496796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:42,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:42,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787140849] [2023-11-24 21:28:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:42,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:42,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:42,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:42,672 INFO L87 Difference]: Start difference. First operand 189 states and 219 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:43,042 INFO L93 Difference]: Finished difference Result 210 states and 242 transitions. [2023-11-24 21:28:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-24 21:28:43,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:43,044 INFO L225 Difference]: With dead ends: 210 [2023-11-24 21:28:43,044 INFO L226 Difference]: Without dead ends: 210 [2023-11-24 21:28:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:43,046 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 21 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:43,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 407 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:28:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-24 21:28:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2023-11-24 21:28:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 174 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:28:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 221 transitions. [2023-11-24 21:28:43,056 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 221 transitions. Word has length 33 [2023-11-24 21:28:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:43,056 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 221 transitions. [2023-11-24 21:28:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:28:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 221 transitions. [2023-11-24 21:28:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 21:28:43,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:43,058 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] [2023-11-24 21:28:43,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:43,262 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:43,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 34515539, now seen corresponding path program 1 times [2023-11-24 21:28:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525923240] [2023-11-24 21:28:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:43,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:43,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:43,265 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:43,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-24 21:28:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:43,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-24 21:28:43,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:43,931 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-24 21:28:43,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 46 [2023-11-24 21:28:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:44,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:44,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2023-11-24 21:28:44,534 INFO L349 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2023-11-24 21:28:44,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2023-11-24 21:28:44,717 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 11 treesize of output 7 [2023-11-24 21:28:44,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-24 21:28:45,161 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 7 treesize of output 3 [2023-11-24 21:28:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:45,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:45,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525923240] [2023-11-24 21:28:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525923240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 21:28:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320325416] [2023-11-24 21:28:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:28:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:28:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:28:45,326 INFO L87 Difference]: Start difference. First operand 191 states and 221 transitions. Second operand has 15 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:50,882 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2023-11-24 21:28:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 21:28:50,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-11-24 21:28:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:50,885 INFO L225 Difference]: With dead ends: 276 [2023-11-24 21:28:50,885 INFO L226 Difference]: Without dead ends: 276 [2023-11-24 21:28:50,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:28:50,887 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 603 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 62 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:50,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 769 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1347 Invalid, 3 Unknown, 0 Unchecked, 4.5s Time] [2023-11-24 21:28:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-24 21:28:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 212. [2023-11-24 21:28:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 137 states have (on average 1.7153284671532847) internal successors, (235), 192 states have internal predecessors, (235), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-24 21:28:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 258 transitions. [2023-11-24 21:28:50,902 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 258 transitions. Word has length 34 [2023-11-24 21:28:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 258 transitions. [2023-11-24 21:28:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 258 transitions. [2023-11-24 21:28:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 21:28:50,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:50,903 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] [2023-11-24 21:28:50,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:51,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:51,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 34515540, now seen corresponding path program 1 times [2023-11-24 21:28:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045047342] [2023-11-24 21:28:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:51,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:51,106 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:51,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-24 21:28:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:51,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-24 21:28:51,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:51,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-11-24 21:28:51,669 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-24 21:28:51,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-24 21:28:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:52,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-11-24 21:28:52,146 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-24 21:28:52,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-24 21:28:52,293 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 11 treesize of output 7 [2023-11-24 21:28:52,302 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 11 treesize of output 7 [2023-11-24 21:28:52,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-24 21:28:52,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-24 21:28:52,661 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 7 treesize of output 3 [2023-11-24 21:28:52,667 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 7 treesize of output 3 [2023-11-24 21:28:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:52,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:52,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:52,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045047342] [2023-11-24 21:28:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045047342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-24 21:28:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898822673] [2023-11-24 21:28:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 21:28:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 21:28:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:28:52,812 INFO L87 Difference]: Start difference. First operand 212 states and 258 transitions. Second operand has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:58,541 INFO L93 Difference]: Finished difference Result 246 states and 283 transitions. [2023-11-24 21:28:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:28:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-11-24 21:28:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:58,545 INFO L225 Difference]: With dead ends: 246 [2023-11-24 21:28:58,545 INFO L226 Difference]: Without dead ends: 246 [2023-11-24 21:28:58,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2023-11-24 21:28:58,546 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 549 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:58,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 490 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-24 21:28:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-24 21:28:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 211. [2023-11-24 21:28:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 137 states have (on average 1.686131386861314) internal successors, (231), 191 states have internal predecessors, (231), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-24 21:28:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 254 transitions. [2023-11-24 21:28:58,555 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 254 transitions. Word has length 34 [2023-11-24 21:28:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:58,555 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 254 transitions. [2023-11-24 21:28:58,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 254 transitions. [2023-11-24 21:28:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 21:28:58,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:58,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:58,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:58,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:58,762 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-24 21:28:58,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1069986121, now seen corresponding path program 1 times [2023-11-24 21:28:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799264899] [2023-11-24 21:28:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:58,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:28:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:58,765 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:28:58,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7df7be96-efec-4051-95bb-8eba82e1fd0a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-24 21:28:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:59,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-24 21:28:59,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:59,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:28:59,444 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2023-11-24 21:28:59,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2023-11-24 21:28:59,456 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 15 treesize of output 1 [2023-11-24 21:28:59,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:28:59,540 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-24 21:28:59,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2023-11-24 21:28:59,668 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 11 treesize of output 7 [2023-11-24 21:28:59,693 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2023-11-24 21:28:59,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2023-11-24 21:28:59,805 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 21:28:59,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 25 [2023-11-24 21:28:59,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-24 21:29:00,023 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 7 treesize of output 3 [2023-11-24 21:29:00,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:29:00,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-24 21:29:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:00,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:00,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:29:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799264899] [2023-11-24 21:29:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799264899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:00,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-24 21:29:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361738764] [2023-11-24 21:29:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:00,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 21:29:00,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:29:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 21:29:00,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:29:00,266 INFO L87 Difference]: Start difference. First operand 211 states and 254 transitions. Second operand has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)