./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ --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 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:41:35,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:41:35,814 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 22:41:35,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:41:35,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:41:35,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:41:35,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:41:35,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:41:35,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:41:35,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:41:35,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:41:35,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:41:35,855 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:41:35,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:41:35,856 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:41:35,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:41:35,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:41:35,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:41:35,858 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:41:35,859 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:41:35,859 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:41:35,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:41:35,861 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:41:35,861 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:41:35,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:41:35,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:41:35,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:41:35,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:41:35,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:41:35,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:41:35,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:35,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:41:35,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:41:35,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:41:35,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:41:35,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:41:35,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:41:35,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:41:35,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:41:35,869 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_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2023-11-23 22:41:36,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:41:36,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:41:36,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:41:36,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:41:36,171 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:41:36,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2023-11-23 22:41:39,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:39,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:39,668 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2023-11-23 22:41:39,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/6ba67ab2e/41c9a7f992da4e1cbfeb81a7e061140c/FLAG4aa190b3b [2023-11-23 22:41:39,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/6ba67ab2e/41c9a7f992da4e1cbfeb81a7e061140c [2023-11-23 22:41:39,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:39,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:39,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:39,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:39,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:39,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:39" (1/1) ... [2023-11-23 22:41:39,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7192722d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:39, skipping insertion in model container [2023-11-23 22:41:39,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:39" (1/1) ... [2023-11-23 22:41:39,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:40,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:40,348 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) [2023-11-23 22:41:40,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6dd3d45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:40, skipping insertion in model container [2023-11-23 22:41:40,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:40,349 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 22:41:40,351 INFO L158 Benchmark]: Toolchain (without parser) took 637.90ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 106.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 22:41:40,352 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:41:40,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.11ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 106.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 22:41:40,355 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.11ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 106.7MB in the end (delta: 14.1MB). 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_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ --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 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:41:42,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:41:42,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-23 22:41:43,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:41:43,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:41:43,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:41:43,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:41:43,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:41:43,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:41:43,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:41:43,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:41:43,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:41:43,079 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:41:43,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:41:43,082 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:41:43,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:41:43,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:41:43,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:41:43,084 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:41:43,085 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:41:43,086 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:41:43,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:41:43,087 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:41:43,087 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 22:41:43,088 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 22:41:43,089 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:41:43,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:41:43,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:41:43,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:41:43,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:41:43,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:41:43,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:41:43,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:43,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:41:43,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:41:43,095 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 22:41:43,095 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 22:41:43,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:41:43,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:41:43,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:41:43,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:41:43,098 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 22:41:43,098 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_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2023-11-23 22:41:43,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:41:43,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:41:43,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:41:43,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:41:43,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:41:43,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2023-11-23 22:41:46,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:47,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:47,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2023-11-23 22:41:47,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/931d4f340/7f16258c0dc444d1bcf8d68b410fbea8/FLAGb8c33fc4a [2023-11-23 22:41:47,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/data/931d4f340/7f16258c0dc444d1bcf8d68b410fbea8 [2023-11-23 22:41:47,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:47,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:47,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:47,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:47,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:47,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:47" (1/1) ... [2023-11-23 22:41:47,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bea89b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:47, skipping insertion in model container [2023-11-23 22:41:47,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:47" (1/1) ... [2023-11-23 22:41:47,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:47,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:48,004 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 22:41:48,018 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:48,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:48,103 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:41:48,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:48,230 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:41:48,238 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:41:48,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48 WrapperNode [2023-11-23 22:41:48,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:48,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:48,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:41:48,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:41:48,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,298 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 58 [2023-11-23 22:41:48,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:48,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:41:48,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:41:48,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:41:48,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:41:48,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:41:48,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:41:48,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:41:48,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (1/1) ... [2023-11-23 22:41:48,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:48,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:41:48,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:41:48,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:41:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-23 22:41:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-23 22:41:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 22:41:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 22:41:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-11-23 22:41:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:41:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 22:41:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-23 22:41:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-23 22:41:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:41:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:41:48,616 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:41:48,619 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:41:49,068 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:41:49,145 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:41:49,145 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:41:49,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:49 BoogieIcfgContainer [2023-11-23 22:41:49,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:41:49,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:41:49,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:41:49,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:41:49,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:41:47" (1/3) ... [2023-11-23 22:41:49,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601ecbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:49, skipping insertion in model container [2023-11-23 22:41:49,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:48" (2/3) ... [2023-11-23 22:41:49,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601ecbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:49, skipping insertion in model container [2023-11-23 22:41:49,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:49" (3/3) ... [2023-11-23 22:41:49,162 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14_3.i [2023-11-23 22:41:49,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:41:49,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-23 22:41:49,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:41:49,272 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;@4bb42adf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:41:49,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-23 22:41:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 55 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:41:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 22:41:49,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:49,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:49,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:49,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1116640624, now seen corresponding path program 1 times [2023-11-23 22:41:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426431217] [2023-11-23 22:41:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:49,307 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 [2023-11-23 22:41:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:49,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:49,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:41:49,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:49,541 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 [2023-11-23 22:41:49,590 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-23 22:41:49,633 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 22:41:49,634 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 [2023-11-23 22:41:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:49,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:49,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426431217] [2023-11-23 22:41:49,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426431217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:49,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:41:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650567225] [2023-11-23 22:41:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:41:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:41:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-11-23 22:41:49,743 INFO L87 Difference]: Start difference. First operand has 63 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 55 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 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) [2023-11-23 22:41:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:50,183 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2023-11-23 22:41:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:41:50,186 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), 1 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 [2023-11-23 22:41:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:50,197 INFO L225 Difference]: With dead ends: 64 [2023-11-23 22:41:50,197 INFO L226 Difference]: Without dead ends: 63 [2023-11-23 22:41:50,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2023-11-23 22:41:50,209 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:50,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 81 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 0 Unknown, 72 Unchecked, 0.4s Time] [2023-11-23 22:41:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-23 22:41:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2023-11-23 22:41:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 53 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:41:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2023-11-23 22:41:50,258 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 11 [2023-11-23 22:41:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:50,259 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2023-11-23 22:41:50,260 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), 1 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) [2023-11-23 22:41:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2023-11-23 22:41:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 22:41:50,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:50,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:50,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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)] Ended with exit code 0 [2023-11-23 22:41:50,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:50,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:50,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1116640623, now seen corresponding path program 1 times [2023-11-23 22:41:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:50,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420754644] [2023-11-23 22:41:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:50,468 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 [2023-11-23 22:41:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:50,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:50,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:50,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:41:50,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:50,613 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 [2023-11-23 22:41:50,619 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 [2023-11-23 22:41:50,701 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 [2023-11-23 22:41:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 22:41:50,762 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 [2023-11-23 22:41:50,774 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 22:41:50,775 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 [2023-11-23 22:41:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:50,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:50,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420754644] [2023-11-23 22:41:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420754644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:50,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:41:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595794329] [2023-11-23 22:41:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:50,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:41:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:41:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-11-23 22:41:50,862 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) 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) [2023-11-23 22:41:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:51,293 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2023-11-23 22:41:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:41:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) 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 [2023-11-23 22:41:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:51,296 INFO L225 Difference]: With dead ends: 66 [2023-11-23 22:41:51,296 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 22:41:51,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2023-11-23 22:41:51,298 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:51,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 108 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2023-11-23 22:41:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 22:41:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2023-11-23 22:41:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 52 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:41:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-11-23 22:41:51,311 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 11 [2023-11-23 22:41:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:51,311 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-11-23 22:41:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) 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) [2023-11-23 22:41:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-11-23 22:41:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 22:41:51,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:51,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:51,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:51,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:51,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -728756586, now seen corresponding path program 1 times [2023-11-23 22:41:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186981107] [2023-11-23 22:41:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:51,519 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 [2023-11-23 22:41:51,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:51,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:51,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:51,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:41:51,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:51,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:51,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186981107] [2023-11-23 22:41:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186981107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:51,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:51,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:41:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435912031] [2023-11-23 22:41:51,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:51,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:41:51,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:41:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:51,674 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 22:41:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:51,789 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-11-23 22:41:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:41:51,791 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), 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 10 [2023-11-23 22:41:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:51,792 INFO L225 Difference]: With dead ends: 66 [2023-11-23 22:41:51,792 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 22:41:51,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:51,794 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:51,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 205 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:41:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 22:41:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-11-23 22:41:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 55 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 22:41:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2023-11-23 22:41:51,813 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 10 [2023-11-23 22:41:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:51,814 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2023-11-23 22:41:51,815 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), 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) [2023-11-23 22:41:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2023-11-23 22:41:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 22:41:51,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:51,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:51,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:52,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 158747095, now seen corresponding path program 1 times [2023-11-23 22:41:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856442928] [2023-11-23 22:41:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:52,026 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 [2023-11-23 22:41:52,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:52,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:52,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:52,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:41:52,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:52,119 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 [2023-11-23 22:41:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:52,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:52,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856442928] [2023-11-23 22:41:52,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856442928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:52,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:41:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85571844] [2023-11-23 22:41:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:41:52,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:41:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:52,184 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 22:41:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:52,573 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2023-11-23 22:41:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:41:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-23 22:41:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:52,575 INFO L225 Difference]: With dead ends: 86 [2023-11-23 22:41:52,576 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 22:41:52,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:41:52,577 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:52,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 64 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:41:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 22:41:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2023-11-23 22:41:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 57 states have internal predecessors, (60), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 22:41:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-11-23 22:41:52,587 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 10 [2023-11-23 22:41:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:52,587 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-11-23 22:41:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 22:41:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-11-23 22:41:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 22:41:52,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:52,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:52,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-23 22:41:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:52,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:52,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 158747096, now seen corresponding path program 1 times [2023-11-23 22:41:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:52,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519585785] [2023-11-23 22:41:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:52,793 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 [2023-11-23 22:41:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:52,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:52,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:41:52,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:52,889 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 [2023-11-23 22:41:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:52,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:52,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519585785] [2023-11-23 22:41:52,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519585785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:52,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:41:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838913911] [2023-11-23 22:41:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:52,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:41:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:41:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:52,991 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 22:41:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:53,373 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2023-11-23 22:41:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:41:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-23 22:41:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:53,375 INFO L225 Difference]: With dead ends: 79 [2023-11-23 22:41:53,375 INFO L226 Difference]: Without dead ends: 79 [2023-11-23 22:41:53,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:41:53,377 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:53,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 78 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:41:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-23 22:41:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2023-11-23 22:41:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 57 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 22:41:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-11-23 22:41:53,390 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 10 [2023-11-23 22:41:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:53,391 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-11-23 22:41:53,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 22:41:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-11-23 22:41:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 22:41:53,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:53,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:53,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:53,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:53,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:53,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1319061937, now seen corresponding path program 1 times [2023-11-23 22:41:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913947000] [2023-11-23 22:41:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:53,597 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 [2023-11-23 22:41:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:53,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:53,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:53,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 22:41:53,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:53,731 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 [2023-11-23 22:41:53,742 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 [2023-11-23 22:41:53,784 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 7 treesize of output 5 [2023-11-23 22:41:53,790 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 5 treesize of output 3 [2023-11-23 22:41:53,881 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) (_ bv0 32)) (_ bv0 32)) (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) (_ bv0 32))))) (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 [2023-11-23 22:41:53,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 22:41:53,939 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 [2023-11-23 22:41:53,957 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 22:41:53,957 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 [2023-11-23 22:41:54,275 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 22:41:54,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-11-23 22:41:54,284 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 22:41:54,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 22:41:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:54,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:54,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913947000] [2023-11-23 22:41:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913947000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:54,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:54,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:41:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455760084] [2023-11-23 22:41:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:54,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 22:41:54,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 22:41:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2023-11-23 22:41:54,390 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:55,643 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-11-23 22:41:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 22:41:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 22:41:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:55,645 INFO L225 Difference]: With dead ends: 67 [2023-11-23 22:41:55,645 INFO L226 Difference]: Without dead ends: 67 [2023-11-23 22:41:55,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=190, Unknown=1, NotChecked=28, Total=272 [2023-11-23 22:41:55,647 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:55,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 233 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 285 Invalid, 0 Unknown, 82 Unchecked, 0.9s Time] [2023-11-23 22:41:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-23 22:41:55,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-11-23 22:41:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 56 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 22:41:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2023-11-23 22:41:55,654 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 14 [2023-11-23 22:41:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:55,654 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2023-11-23 22:41:55,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2023-11-23 22:41:55,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 22:41:55,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:55,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:55,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:55,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:55,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1319061938, now seen corresponding path program 1 times [2023-11-23 22:41:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102144736] [2023-11-23 22:41:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:55,860 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 [2023-11-23 22:41:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:55,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:55,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:55,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:41:55,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:57,958 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (= |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_5|))) is different from true [2023-11-23 22:41:58,029 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 15 treesize of output 7 [2023-11-23 22:41:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:58,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:58,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102144736] [2023-11-23 22:41:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102144736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:58,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:58,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:41:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449130746] [2023-11-23 22:41:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:58,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:41:58,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:41:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2023-11-23 22:41:58,083 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:58,511 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-11-23 22:41:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:41:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 22:41:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:58,513 INFO L225 Difference]: With dead ends: 66 [2023-11-23 22:41:58,514 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 22:41:58,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-23 22:41:58,515 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:58,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 211 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2023-11-23 22:41:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 22:41:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-23 22:41:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 55 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 22:41:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-11-23 22:41:58,521 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 14 [2023-11-23 22:41:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:58,522 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-11-23 22:41:58,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-11-23 22:41:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 22:41:58,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:58,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:58,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:58,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:58,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:58,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2058752933, now seen corresponding path program 1 times [2023-11-23 22:41:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:58,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461508223] [2023-11-23 22:41:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:58,727 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 [2023-11-23 22:41:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:58,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:58,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:58,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:41:58,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:58,836 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 [2023-11-23 22:41:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:58,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:41:58,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:41:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461508223] [2023-11-23 22:41:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461508223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:41:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432349677] [2023-11-23 22:41:58,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:41:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:41:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:41:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:41:58,965 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:59,523 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2023-11-23 22:41:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:41:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 22:41:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:59,525 INFO L225 Difference]: With dead ends: 79 [2023-11-23 22:41:59,525 INFO L226 Difference]: Without dead ends: 79 [2023-11-23 22:41:59,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:41:59,527 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:59,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 196 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:41:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-23 22:41:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2023-11-23 22:41:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 62 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-23 22:41:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2023-11-23 22:41:59,534 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 15 [2023-11-23 22:41:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:59,535 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2023-11-23 22:41:59,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:41:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2023-11-23 22:41:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 22:41:59,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:59,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:59,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:41:59,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:41:59,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2058752934, now seen corresponding path program 1 times [2023-11-23 22:41:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:41:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636888932] [2023-11-23 22:41:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:59,741 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 [2023-11-23 22:41:59,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:41:59,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:41:59,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:41:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:59,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 22:41:59,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:41:59,859 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 [2023-11-23 22:42:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:00,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:00,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:00,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636888932] [2023-11-23 22:42:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636888932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:00,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:42:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939465163] [2023-11-23 22:42:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:42:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:42:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:42:00,093 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:00,740 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2023-11-23 22:42:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:42:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 22:42:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:00,743 INFO L225 Difference]: With dead ends: 77 [2023-11-23 22:42:00,743 INFO L226 Difference]: Without dead ends: 77 [2023-11-23 22:42:00,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:42:00,744 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:00,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 257 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:42:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-23 22:42:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-23 22:42:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 62 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-23 22:42:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2023-11-23 22:42:00,751 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 15 [2023-11-23 22:42:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2023-11-23 22:42:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2023-11-23 22:42:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 22:42:00,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:00,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:00,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:00,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:00,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:00,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2107131644, now seen corresponding path program 1 times [2023-11-23 22:42:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808069236] [2023-11-23 22:42:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:00,965 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 [2023-11-23 22:42:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:00,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:00,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:01,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:42:01,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:01,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:01,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808069236] [2023-11-23 22:42:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808069236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:42:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611631048] [2023-11-23 22:42:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:42:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:42:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:42:01,138 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:01,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:01,236 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2023-11-23 22:42:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:42:01,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 22:42:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:01,238 INFO L225 Difference]: With dead ends: 60 [2023-11-23 22:42:01,238 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 22:42:01,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:42:01,239 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:01,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 187 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:42:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 22:42:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-23 22:42:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 50 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 22:42:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2023-11-23 22:42:01,244 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 15 [2023-11-23 22:42:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:01,245 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2023-11-23 22:42:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2023-11-23 22:42:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 22:42:01,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:01,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:01,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:01,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:01,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:01,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash 477925908, now seen corresponding path program 1 times [2023-11-23 22:42:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127065988] [2023-11-23 22:42:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:01,451 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 [2023-11-23 22:42:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:01,452 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:01,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:01,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:42:01,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:01,616 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#list_14~0#1.base_13| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_13| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_13|) (_ bv0 1)))) is different from true [2023-11-23 22:42:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:01,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:01,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127065988] [2023-11-23 22:42:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127065988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:01,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:01,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:42:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567373789] [2023-11-23 22:42:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:42:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:42:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 22:42:01,620 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-23 22:42:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:01,869 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2023-11-23 22:42:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:42:01,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2023-11-23 22:42:01,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:01,871 INFO L225 Difference]: With dead ends: 70 [2023-11-23 22:42:01,871 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 22:42:01,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 22:42:01,872 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:01,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 53 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 71 Unchecked, 0.2s Time] [2023-11-23 22:42:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 22:42:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2023-11-23 22:42:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 51 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 22:42:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2023-11-23 22:42:01,877 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 13 [2023-11-23 22:42:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:01,877 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2023-11-23 22:42:01,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-23 22:42:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2023-11-23 22:42:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 22:42:01,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:01,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:01,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:02,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:02,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1930854270, now seen corresponding path program 1 times [2023-11-23 22:42:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960147891] [2023-11-23 22:42:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,090 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 [2023-11-23 22:42:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:02,090 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:02,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:42:02,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:02,388 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 [2023-11-23 22:42:02,392 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 15 treesize of output 7 [2023-11-23 22:42:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:02,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:02,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960147891] [2023-11-23 22:42:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960147891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:02,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:42:02,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911226493] [2023-11-23 22:42:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:42:02,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:42:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:42:02,424 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-23 22:42:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:02,710 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2023-11-23 22:42:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:42:02,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2023-11-23 22:42:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:02,711 INFO L225 Difference]: With dead ends: 61 [2023-11-23 22:42:02,711 INFO L226 Difference]: Without dead ends: 54 [2023-11-23 22:42:02,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:42:02,712 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:02,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:42:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-23 22:42:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-23 22:42:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 45 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:42:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2023-11-23 22:42:02,723 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 14 [2023-11-23 22:42:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:02,724 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2023-11-23 22:42:02,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-23 22:42:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2023-11-23 22:42:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 22:42:02,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:02,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:02,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-23 22:42:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:02,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:02,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1518353112, now seen corresponding path program 1 times [2023-11-23 22:42:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739728869] [2023-11-23 22:42:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,931 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 [2023-11-23 22:42:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:02,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:02,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:03,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:42:03,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:03,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:03,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739728869] [2023-11-23 22:42:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739728869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:03,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:03,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:42:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632530123] [2023-11-23 22:42:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:03,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:42:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:42:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:42:03,091 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:03,292 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2023-11-23 22:42:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:42:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-23 22:42:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:03,293 INFO L225 Difference]: With dead ends: 53 [2023-11-23 22:42:03,293 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 22:42:03,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:42:03,294 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:03,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:42:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 22:42:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-23 22:42:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 44 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:42:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2023-11-23 22:42:03,298 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 17 [2023-11-23 22:42:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:03,298 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2023-11-23 22:42:03,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2023-11-23 22:42:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 22:42:03,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:03,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:03,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:03,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:03,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:03,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1518353111, now seen corresponding path program 1 times [2023-11-23 22:42:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482059180] [2023-11-23 22:42:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:03,501 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 [2023-11-23 22:42:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:03,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:03,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:03,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:42:03,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:03,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:03,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482059180] [2023-11-23 22:42:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482059180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:03,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:42:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310580038] [2023-11-23 22:42:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:03,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:42:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:03,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:42:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:42:03,739 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:04,112 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2023-11-23 22:42:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:42:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-23 22:42:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:04,114 INFO L225 Difference]: With dead ends: 52 [2023-11-23 22:42:04,114 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 22:42:04,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:42:04,115 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:04,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 217 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:42:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 22:42:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-23 22:42:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 43 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:42:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-11-23 22:42:04,121 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 17 [2023-11-23 22:42:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:04,121 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-11-23 22:42:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:42:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-11-23 22:42:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 22:42:04,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:04,122 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] [2023-11-23 22:42:04,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:04,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:04,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2009792801, now seen corresponding path program 1 times [2023-11-23 22:42:04,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:04,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836086096] [2023-11-23 22:42:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:04,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:04,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:04,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:04,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:04,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:42:04,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:04,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:04,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:04,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836086096] [2023-11-23 22:42:04,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836086096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:04,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:04,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:42:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160603637] [2023-11-23 22:42:04,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:42:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:42:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:42:04,607 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:05,025 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2023-11-23 22:42:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:42:05,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-23 22:42:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:05,026 INFO L225 Difference]: With dead ends: 60 [2023-11-23 22:42:05,027 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 22:42:05,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:42:05,030 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:05,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 111 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:42:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 22:42:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2023-11-23 22:42:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:42:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2023-11-23 22:42:05,034 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 22 [2023-11-23 22:42:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:05,037 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2023-11-23 22:42:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2023-11-23 22:42:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 22:42:05,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:05,043 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] [2023-11-23 22:42:05,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:05,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:05,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2009792800, now seen corresponding path program 1 times [2023-11-23 22:42:05,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187079139] [2023-11-23 22:42:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:05,248 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 [2023-11-23 22:42:05,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:05,249 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:05,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:05,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 22:42:05,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:05,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:05,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187079139] [2023-11-23 22:42:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187079139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:05,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:05,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:42:05,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42070413] [2023-11-23 22:42:05,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:42:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:42:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:42:05,539 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:05,890 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2023-11-23 22:42:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:42:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-23 22:42:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:05,892 INFO L225 Difference]: With dead ends: 50 [2023-11-23 22:42:05,892 INFO L226 Difference]: Without dead ends: 50 [2023-11-23 22:42:05,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:42:05,893 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:05,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 147 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:42:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-23 22:42:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-23 22:42:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.5) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:42:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2023-11-23 22:42:05,896 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 22 [2023-11-23 22:42:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:05,896 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2023-11-23 22:42:05,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:42:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2023-11-23 22:42:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 22:42:05,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:05,897 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] [2023-11-23 22:42:05,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-23 22:42:06,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:06,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:06,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1891016692, now seen corresponding path program 1 times [2023-11-23 22:42:06,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478566700] [2023-11-23 22:42:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:06,100 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 [2023-11-23 22:42:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:06,101 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:06,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:06,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 22:42:06,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:06,501 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 [2023-11-23 22:42:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:06,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:06,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478566700] [2023-11-23 22:42:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478566700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:06,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:06,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 22:42:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272093641] [2023-11-23 22:42:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 22:42:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 22:42:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:42:06,664 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:07,322 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2023-11-23 22:42:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:42:07,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-23 22:42:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:07,325 INFO L225 Difference]: With dead ends: 60 [2023-11-23 22:42:07,325 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 22:42:07,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-23 22:42:07,326 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:07,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:42:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 22:42:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2023-11-23 22:42:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 43 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:42:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2023-11-23 22:42:07,330 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 25 [2023-11-23 22:42:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2023-11-23 22:42:07,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2023-11-23 22:42:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 22:42:07,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:07,332 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] [2023-11-23 22:42:07,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-23 22:42:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:07,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:07,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1508077702, now seen corresponding path program 1 times [2023-11-23 22:42:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764018754] [2023-11-23 22:42:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:07,537 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 [2023-11-23 22:42:07,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:07,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:07,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:07,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 22:42:07,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:07,725 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 [2023-11-23 22:42:08,009 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 [2023-11-23 22:42:08,236 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 19 treesize of output 11 [2023-11-23 22:42:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:08,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:08,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764018754] [2023-11-23 22:42:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764018754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 22:42:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451138669] [2023-11-23 22:42:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 22:42:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:42:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:42:08,408 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:09,960 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2023-11-23 22:42:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 22:42:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2023-11-23 22:42:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:09,961 INFO L225 Difference]: With dead ends: 67 [2023-11-23 22:42:09,961 INFO L226 Difference]: Without dead ends: 67 [2023-11-23 22:42:09,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-11-23 22:42:09,963 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:09,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 130 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 22:42:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-23 22:42:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2023-11-23 22:42:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 49 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:42:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2023-11-23 22:42:09,967 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 26 [2023-11-23 22:42:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:09,968 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2023-11-23 22:42:09,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2023-11-23 22:42:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 22:42:09,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:09,969 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] [2023-11-23 22:42:09,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:10,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:10,178 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:10,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1508077703, now seen corresponding path program 1 times [2023-11-23 22:42:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:10,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233989034] [2023-11-23 22:42:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:10,179 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 [2023-11-23 22:42:10,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:10,181 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:10,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:10,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 22:42:10,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:10,363 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 [2023-11-23 22:42:10,764 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 [2023-11-23 22:42:10,772 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 [2023-11-23 22:42:11,052 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 17 treesize of output 9 [2023-11-23 22:42:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:11,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:11,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233989034] [2023-11-23 22:42:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233989034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 22:42:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612421798] [2023-11-23 22:42:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 22:42:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 22:42:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:42:11,263 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:13,097 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2023-11-23 22:42:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 22:42:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2023-11-23 22:42:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:13,098 INFO L225 Difference]: With dead ends: 67 [2023-11-23 22:42:13,098 INFO L226 Difference]: Without dead ends: 67 [2023-11-23 22:42:13,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-23 22:42:13,100 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:13,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 166 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 22:42:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-23 22:42:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2023-11-23 22:42:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.5) internal successors, (57), 50 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:42:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2023-11-23 22:42:13,104 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 26 [2023-11-23 22:42:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:13,104 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2023-11-23 22:42:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 12 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2023-11-23 22:42:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 22:42:13,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:13,105 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] [2023-11-23 22:42:13,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:13,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 22:42:13,306 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-23 22:42:13,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1858695233, now seen corresponding path program 1 times [2023-11-23 22:42:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 22:42:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233934116] [2023-11-23 22:42:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:13,307 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 [2023-11-23 22:42:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 22:42:13,309 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 22:42:13,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee66ff3-4e4d-4790-acc0-0c9e1c7e9ae1/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 22:42:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-23 22:42:13,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:42:13,520 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-23 22:42:13,521 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 22 [2023-11-23 22:42:13,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 22:42:13,602 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 17 treesize of output 23 [2023-11-23 22:42:13,730 INFO L349 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2023-11-23 22:42:13,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2023-11-23 22:42:14,221 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 [2023-11-23 22:42:14,320 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 21 treesize of output 20 [2023-11-23 22:42:14,441 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 [2023-11-23 22:42:14,502 INFO L349 Elim1Store]: treesize reduction 66, result has 35.9 percent of original size [2023-11-23 22:42:14,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 36 treesize of output 50 [2023-11-23 22:42:14,900 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 22:42:14,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2023-11-23 22:42:15,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-11-23 22:42:15,945 INFO L349 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-23 22:42:15,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 17 [2023-11-23 22:42:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:16,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:42:16,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 22:42:16,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233934116] [2023-11-23 22:42:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233934116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-23 22:42:16,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470082766] [2023-11-23 22:42:16,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:16,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 22:42:16,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 22:42:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 22:42:16,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-11-23 22:42:16,058 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:42:19,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:21,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:24,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:26,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:28,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:31,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:33,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:35,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 22:42:38,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]