./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:05:35,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:05:35,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:05:35,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:05:35,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:05:35,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:05:35,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:05:35,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:05:35,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:05:35,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:05:35,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:05:35,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:05:35,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:05:35,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:05:36,000 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:05:36,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:05:36,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:05:36,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:05:36,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:05:36,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:05:36,006 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:05:36,007 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:05:36,007 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:05:36,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:05:36,008 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:05:36,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:05:36,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:05:36,010 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:05:36,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:05:36,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:05:36,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:05:36,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:05:36,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:36,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:05:36,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:05:36,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:05:36,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:05:36,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:05:36,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:05:36,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:05:36,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:05:36,019 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_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-11-24 22:05:36,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:05:36,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:05:36,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:05:36,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:05:36,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:05:36,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-24 22:05:39,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:05:40,398 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:05:40,400 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-24 22:05:40,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/10cffbf2a/8d2a289a43c943e79f5f044e2b04be3c/FLAGc1a0a4c80 [2023-11-24 22:05:40,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/10cffbf2a/8d2a289a43c943e79f5f044e2b04be3c [2023-11-24 22:05:40,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:05:40,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:05:40,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:40,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:05:40,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:05:40,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:40" (1/1) ... [2023-11-24 22:05:40,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cb1f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:40, skipping insertion in model container [2023-11-24 22:05:40,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:40" (1/1) ... [2023-11-24 22:05:40,564 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:05:41,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:41,460 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 22:05:41,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d34e1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:41, skipping insertion in model container [2023-11-24 22:05:41,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:41,465 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 22:05:41,468 INFO L158 Benchmark]: Toolchain (without parser) took 1005.07ms. Allocated memory is still 144.7MB. Free memory was 103.9MB in the beginning and 81.7MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 22:05:41,468 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:05:41,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1002.35ms. Allocated memory is still 144.7MB. Free memory was 103.9MB in the beginning and 82.1MB in the end (delta: 21.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 22:05:41,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1002.35ms. Allocated memory is still 144.7MB. Free memory was 103.9MB in the beginning and 82.1MB in the end (delta: 21.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:05:44,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:05:44,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 22:05:44,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:05:44,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:05:44,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:05:44,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:05:44,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:05:44,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:05:44,178 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:05:44,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:05:44,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:05:44,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:05:44,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:05:44,182 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:05:44,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:05:44,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:05:44,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:05:44,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:05:44,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:05:44,186 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:05:44,186 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:05:44,187 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:05:44,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:05:44,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:05:44,188 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:05:44,189 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:05:44,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:05:44,190 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:05:44,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:05:44,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:05:44,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:05:44,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:05:44,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:05:44,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:44,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:05:44,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:05:44,193 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 22:05:44,194 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:05:44,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:05:44,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:05:44,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:05:44,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:05:44,195 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 22:05:44,195 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_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-11-24 22:05:44,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:05:44,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:05:44,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:05:44,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:05:44,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:05:44,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-24 22:05:47,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:05:48,433 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:05:48,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-24 22:05:48,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/67e4a967b/add8ad50baa54643905665f35e17fd13/FLAGf473857c5 [2023-11-24 22:05:48,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/data/67e4a967b/add8ad50baa54643905665f35e17fd13 [2023-11-24 22:05:48,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:05:48,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:05:48,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:48,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:05:48,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:05:48,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:48" (1/1) ... [2023-11-24 22:05:48,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5135879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:48, skipping insertion in model container [2023-11-24 22:05:48,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:48" (1/1) ... [2023-11-24 22:05:48,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:05:49,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:49,377 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 22:05:49,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:05:49,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:49,564 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:05:49,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:49,763 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:05:49,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49 WrapperNode [2023-11-24 22:05:49,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:49,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:49,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:05:49,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:05:49,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:49,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:49,923 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1487 [2023-11-24 22:05:49,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:49,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:05:49,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:05:49,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:05:49,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:49,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:49,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,154 INFO L175 MemorySlicer]: Split 413 memory accesses to 4 slices as follows [2, 5, 401, 5]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 100 writes are split as follows [0, 1, 98, 1]. [2023-11-24 22:05:50,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:05:50,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:05:50,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:05:50,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:05:50,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (1/1) ... [2023-11-24 22:05:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:05:50,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:05:50,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 22:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 22:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 22:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 22:05:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 22:05:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 22:05:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 22:05:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 22:05:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 22:05:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 22:05:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 22:05:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 22:05:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 22:05:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-24 22:05:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 22:05:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 22:05:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 22:05:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-24 22:05:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 22:05:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 22:05:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 22:05:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 22:05:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 22:05:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 22:05:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 22:05:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 22:05:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:05:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 22:05:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 22:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 22:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 22:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 22:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 22:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 22:05:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 22:05:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:05:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:05:50,767 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:05:50,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:05:50,775 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 22:05:50,849 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 22:05:50,873 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 22:05:50,897 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 22:05:58,944 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:05:59,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:05:59,232 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-24 22:05:59,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:59 BoogieIcfgContainer [2023-11-24 22:05:59,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:05:59,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:05:59,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:05:59,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:05:59,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:05:48" (1/3) ... [2023-11-24 22:05:59,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2134e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:59, skipping insertion in model container [2023-11-24 22:05:59,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:49" (2/3) ... [2023-11-24 22:05:59,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2134e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:59, skipping insertion in model container [2023-11-24 22:05:59,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:59" (3/3) ... [2023-11-24 22:05:59,247 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2023-11-24 22:05:59,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:05:59,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-24 22:05:59,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:05:59,347 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;@1c21d415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:05:59,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-24 22:05:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:05:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:05:59,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:05:59,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 22:05:59,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:05:59,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 79528167, now seen corresponding path program 1 times [2023-11-24 22:05:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:05:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485252992] [2023-11-24 22:05:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:59,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:05:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:05:59,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:05:59,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 22:05:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:59,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 22:05:59,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:05:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:59,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:05:59,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:05:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485252992] [2023-11-24 22:05:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485252992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:59,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:05:59,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775789347] [2023-11-24 22:05:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:05:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:05:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:05:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:05:59,741 INFO L87 Difference]: Start difference. First operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:01,039 INFO L93 Difference]: Finished difference Result 1486 states and 1577 transitions. [2023-11-24 22:06:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:06:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 22:06:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:01,072 INFO L225 Difference]: With dead ends: 1486 [2023-11-24 22:06:01,072 INFO L226 Difference]: Without dead ends: 1485 [2023-11-24 22:06:01,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:06:01,079 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:01,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1419 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 22:06:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-24 22:06:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2023-11-24 22:06:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 632 states have (on average 2.4430379746835444) internal successors, (1544), 1476 states have internal predecessors, (1544), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1576 transitions. [2023-11-24 22:06:01,208 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1576 transitions. Word has length 4 [2023-11-24 22:06:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 1576 transitions. [2023-11-24 22:06:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1576 transitions. [2023-11-24 22:06:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:06:01,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:01,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 22:06:01,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:01,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:01,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:01,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash 79528229, now seen corresponding path program 1 times [2023-11-24 22:06:01,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:01,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453158992] [2023-11-24 22:06:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:01,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:01,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 22:06:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:01,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:06:01,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:01,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 22:06:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:01,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:01,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453158992] [2023-11-24 22:06:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453158992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:01,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:01,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:01,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052736669] [2023-11-24 22:06:01,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:01,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:01,732 INFO L87 Difference]: Start difference. First operand 1485 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:05,680 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2023-11-24 22:06:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 22:06:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:05,692 INFO L225 Difference]: With dead ends: 1515 [2023-11-24 22:06:05,698 INFO L226 Difference]: Without dead ends: 1515 [2023-11-24 22:06:05,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:05,700 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1042 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:05,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1073 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-24 22:06:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-11-24 22:06:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1458. [2023-11-24 22:06:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 698 states have (on average 2.2578796561604584) internal successors, (1576), 1449 states have internal predecessors, (1576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1608 transitions. [2023-11-24 22:06:05,761 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1608 transitions. Word has length 4 [2023-11-24 22:06:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:05,762 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1608 transitions. [2023-11-24 22:06:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1608 transitions. [2023-11-24 22:06:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:06:05,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:05,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 22:06:05,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:05,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:05,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:05,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash 79528230, now seen corresponding path program 1 times [2023-11-24 22:06:05,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:05,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348340132] [2023-11-24 22:06:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:05,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:05,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 22:06:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:06,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:06:06,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:06,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 22:06:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:06,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:06,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348340132] [2023-11-24 22:06:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348340132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218058637] [2023-11-24 22:06:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:06,216 INFO L87 Difference]: Start difference. First operand 1458 states and 1608 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:11,203 INFO L93 Difference]: Finished difference Result 1730 states and 1900 transitions. [2023-11-24 22:06:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 22:06:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:11,213 INFO L225 Difference]: With dead ends: 1730 [2023-11-24 22:06:11,213 INFO L226 Difference]: Without dead ends: 1730 [2023-11-24 22:06:11,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:11,215 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 456 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:11,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1701 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-24 22:06:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-11-24 22:06:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1581. [2023-11-24 22:06:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 831 states have (on average 2.2250300842358604) internal successors, (1849), 1572 states have internal predecessors, (1849), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1881 transitions. [2023-11-24 22:06:11,259 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1881 transitions. Word has length 4 [2023-11-24 22:06:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 1881 transitions. [2023-11-24 22:06:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1881 transitions. [2023-11-24 22:06:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 22:06:11,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:11,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:06:11,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-24 22:06:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:11,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:11,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1827900904, now seen corresponding path program 1 times [2023-11-24 22:06:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228331709] [2023-11-24 22:06:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:11,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:11,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:11,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:11,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 22:06:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:11,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:06:11,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:11,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:11,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228331709] [2023-11-24 22:06:11,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228331709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:11,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:11,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:11,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6433301] [2023-11-24 22:06:11,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:11,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:11,662 INFO L87 Difference]: Start difference. First operand 1581 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:13,651 INFO L93 Difference]: Finished difference Result 2770 states and 3331 transitions. [2023-11-24 22:06:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:13,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 22:06:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:13,667 INFO L225 Difference]: With dead ends: 2770 [2023-11-24 22:06:13,668 INFO L226 Difference]: Without dead ends: 2770 [2023-11-24 22:06:13,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:13,669 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1029 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:13,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2627 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 22:06:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-24 22:06:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1582. [2023-11-24 22:06:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 832 states have (on average 2.2235576923076925) internal successors, (1850), 1573 states have internal predecessors, (1850), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1882 transitions. [2023-11-24 22:06:13,719 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1882 transitions. Word has length 5 [2023-11-24 22:06:13,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:13,719 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 1882 transitions. [2023-11-24 22:06:13,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1882 transitions. [2023-11-24 22:06:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:06:13,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:13,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:13,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:13,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:13,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1705953425, now seen corresponding path program 1 times [2023-11-24 22:06:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004083688] [2023-11-24 22:06:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:13,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:13,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:13,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:13,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 22:06:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:14,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:06:14,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:14,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:14,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004083688] [2023-11-24 22:06:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004083688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:06:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717339018] [2023-11-24 22:06:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:14,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:14,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:14,164 INFO L87 Difference]: Start difference. First operand 1582 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:15,617 INFO L93 Difference]: Finished difference Result 1543 states and 1842 transitions. [2023-11-24 22:06:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 22:06:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:15,628 INFO L225 Difference]: With dead ends: 1543 [2023-11-24 22:06:15,629 INFO L226 Difference]: Without dead ends: 1543 [2023-11-24 22:06:15,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:15,630 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 70 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:15,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2485 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 22:06:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-11-24 22:06:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-11-24 22:06:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 817 states have (on average 2.215422276621787) internal successors, (1810), 1534 states have internal predecessors, (1810), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1842 transitions. [2023-11-24 22:06:15,669 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1842 transitions. Word has length 10 [2023-11-24 22:06:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:15,669 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1842 transitions. [2023-11-24 22:06:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1842 transitions. [2023-11-24 22:06:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 22:06:15,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:15,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:15,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:15,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:15,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:15,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1256262345, now seen corresponding path program 1 times [2023-11-24 22:06:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611479111] [2023-11-24 22:06:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:15,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:15,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 22:06:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:16,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:06:16,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:16,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:16,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:16,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611479111] [2023-11-24 22:06:16,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611479111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:16,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:16,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:06:16,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269172398] [2023-11-24 22:06:16,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:06:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:06:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:06:16,139 INFO L87 Difference]: Start difference. First operand 1543 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:18,057 INFO L93 Difference]: Finished difference Result 1529 states and 1821 transitions. [2023-11-24 22:06:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:06:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 22:06:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:18,067 INFO L225 Difference]: With dead ends: 1529 [2023-11-24 22:06:18,067 INFO L226 Difference]: Without dead ends: 1529 [2023-11-24 22:06:18,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:06:18,068 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 58 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:18,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3684 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 22:06:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-11-24 22:06:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1528. [2023-11-24 22:06:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 816 states have (on average 2.1911764705882355) internal successors, (1788), 1519 states have internal predecessors, (1788), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1820 transitions. [2023-11-24 22:06:18,106 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1820 transitions. Word has length 12 [2023-11-24 22:06:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1820 transitions. [2023-11-24 22:06:18,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1820 transitions. [2023-11-24 22:06:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 22:06:18,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:18,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:18,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:18,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:18,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1440591927, now seen corresponding path program 1 times [2023-11-24 22:06:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496682579] [2023-11-24 22:06:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:18,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:18,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:18,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 22:06:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:18,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:06:18,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:18,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 22:06:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:18,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:18,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:18,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496682579] [2023-11-24 22:06:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496682579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:06:18,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722356728] [2023-11-24 22:06:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:06:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:06:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:06:18,651 INFO L87 Difference]: Start difference. First operand 1528 states and 1820 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:06:22,922 INFO L93 Difference]: Finished difference Result 1581 states and 1827 transitions. [2023-11-24 22:06:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:06:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-24 22:06:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:06:22,937 INFO L225 Difference]: With dead ends: 1581 [2023-11-24 22:06:22,937 INFO L226 Difference]: Without dead ends: 1581 [2023-11-24 22:06:22,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:06:22,938 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 977 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:06:22,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1579 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-24 22:06:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-24 22:06:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1524. [2023-11-24 22:06:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 816 states have (on average 2.1862745098039214) internal successors, (1784), 1515 states have internal predecessors, (1784), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 22:06:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1816 transitions. [2023-11-24 22:06:22,995 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1816 transitions. Word has length 26 [2023-11-24 22:06:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:06:22,996 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1816 transitions. [2023-11-24 22:06:22,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1816 transitions. [2023-11-24 22:06:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 22:06:22,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:06:22,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:23,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 22:06:23,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:23,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-24 22:06:23,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1440591928, now seen corresponding path program 1 times [2023-11-24 22:06:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:06:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037258897] [2023-11-24 22:06:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:06:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:06:23,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:06:23,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407a74b9-23a5-459a-976d-b9419cf314c8/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 22:06:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:23,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 22:06:23,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:06:23,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 22:06:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:23,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:06:23,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:06:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037258897] [2023-11-24 22:06:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037258897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:23,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:23,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:06:23,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666803165] [2023-11-24 22:06:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:06:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:06:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:06:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:06:23,650 INFO L87 Difference]: Start difference. First operand 1524 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)