./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:47:10,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:47:10,520 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:47:10,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:47:10,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:47:10,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:47:10,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:47:10,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:47:10,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:47:10,579 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:47:10,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:47:10,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:47:10,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:47:10,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:47:10,584 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:47:10,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:47:10,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:47:10,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:47:10,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:47:10,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:47:10,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:47:10,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:47:10,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:47:10,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:47:10,589 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:47:10,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:47:10,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:47:10,590 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:47:10,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:47:10,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:47:10,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:47:10,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:47:10,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:10,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:47:10,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:47:10,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:47:10,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:47:10,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:47:10,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:47:10,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:47:10,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:47:10,595 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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2023-11-24 21:47:10,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:47:10,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:47:10,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:47:10,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:47:10,878 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:47:10,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-24 21:47:13,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:47:14,405 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:47:14,406 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-24 21:47:14,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/b18169bbe/12f55120cf074b6da2354b6d12b164c5/FLAG594b884e8 [2023-11-24 21:47:14,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/b18169bbe/12f55120cf074b6da2354b6d12b164c5 [2023-11-24 21:47:14,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:47:14,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:47:14,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:14,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:47:14,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:47:14,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:14" (1/1) ... [2023-11-24 21:47:14,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27789e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:14, skipping insertion in model container [2023-11-24 21:47:14,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:14" (1/1) ... [2023-11-24 21:47:14,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:15,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:15,180 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:47:15,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7166317f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:15, skipping insertion in model container [2023-11-24 21:47:15,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:15,182 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:47:15,184 INFO L158 Benchmark]: Toolchain (without parser) took 737.50ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 103.2MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:47:15,185 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:15,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 735.18ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 103.2MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:47:15,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 735.18ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 103.2MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:47:17,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:47:17,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:47:17,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:47:17,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:47:17,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:47:17,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:47:17,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:47:17,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:47:17,995 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:47:17,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:47:17,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:47:17,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:47:17,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:47:17,999 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:47:18,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:47:18,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:47:18,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:47:18,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:47:18,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:47:18,005 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:47:18,005 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:47:18,006 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:47:18,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:47:18,007 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:47:18,007 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:47:18,008 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:47:18,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:47:18,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:47:18,010 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:47:18,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:47:18,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:47:18,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:47:18,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:47:18,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:18,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:47:18,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:47:18,015 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:47:18,016 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:47:18,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:47:18,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:47:18,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:47:18,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:47:18,017 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:47:18,018 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_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2023-11-24 21:47:18,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:47:18,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:47:18,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:47:18,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:47:18,443 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:47:18,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-24 21:47:21,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:47:21,926 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:47:21,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-24 21:47:21,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/d7f00730d/c5939ee0c8b84881adce1acd18e79bb0/FLAG8e2770a54 [2023-11-24 21:47:21,975 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/data/d7f00730d/c5939ee0c8b84881adce1acd18e79bb0 [2023-11-24 21:47:21,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:47:21,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:47:21,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:21,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:47:21,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:47:21,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:21" (1/1) ... [2023-11-24 21:47:21,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3524f479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:21, skipping insertion in model container [2023-11-24 21:47:21,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:21" (1/1) ... [2023-11-24 21:47:22,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:22,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:22,715 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:47:22,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:22,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:22,871 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:47:22,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:23,032 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:47:23,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23 WrapperNode [2023-11-24 21:47:23,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:23,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:23,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:47:23,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:47:23,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,179 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-24 21:47:23,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:23,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:47:23,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:47:23,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:47:23,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,230 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,279 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [2, 156, 5]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 43 writes are split as follows [0, 42, 1]. [2023-11-24 21:47:23,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:47:23,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:47:23,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:47:23,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:47:23,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (1/1) ... [2023-11-24 21:47:23,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:23,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:47:23,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:47:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:47:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:47:23,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:47:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:47:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:47:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:47:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 21:47:23,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 21:47:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:47:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:47:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:47:23,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:47:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:47:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:47:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:47:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:47:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:47:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:47:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:47:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:47:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:47:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:47:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:47:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:47:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:47:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:47:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:47:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:47:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:47:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:47:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:47:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:47:23,661 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:47:23,663 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:47:23,666 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:47:23,743 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:47:23,765 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 21:47:27,122 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:47:27,258 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:47:27,258 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-24 21:47:27,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:27 BoogieIcfgContainer [2023-11-24 21:47:27,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:47:27,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:47:27,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:47:27,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:47:27,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:47:21" (1/3) ... [2023-11-24 21:47:27,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad452ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:27, skipping insertion in model container [2023-11-24 21:47:27,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:23" (2/3) ... [2023-11-24 21:47:27,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad452ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:27, skipping insertion in model container [2023-11-24 21:47:27,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:27" (3/3) ... [2023-11-24 21:47:27,269 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2023-11-24 21:47:27,288 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:47:27,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-24 21:47:27,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:47:27,353 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;@5c4627f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:47:27,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-24 21:47:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 607 states, 264 states have (on average 2.515151515151515) internal successors, (664), 601 states have internal predecessors, (664), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:47:27,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:27,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:47:27,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:27,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash 33968791, now seen corresponding path program 1 times [2023-11-24 21:47:27,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:27,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574851701] [2023-11-24 21:47:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:27,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:27,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:47:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:27,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 21:47:27,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:27,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:27,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:27,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574851701] [2023-11-24 21:47:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574851701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:27,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:27,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841200084] [2023-11-24 21:47:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:47:27,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:47:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:47:27,644 INFO L87 Difference]: Start difference. First operand has 607 states, 264 states have (on average 2.515151515151515) internal successors, (664), 601 states have internal predecessors, (664), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) 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 21:47:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:28,245 INFO L93 Difference]: Finished difference Result 597 states and 643 transitions. [2023-11-24 21:47:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:47:28,249 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 21:47:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:28,276 INFO L225 Difference]: With dead ends: 597 [2023-11-24 21:47:28,276 INFO L226 Difference]: Without dead ends: 596 [2023-11-24 21:47:28,278 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 21:47:28,283 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:28,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 577 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:47:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-11-24 21:47:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2023-11-24 21:47:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 259 states have (on average 2.3783783783783785) internal successors, (616), 590 states have internal predecessors, (616), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 642 transitions. [2023-11-24 21:47:28,415 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 642 transitions. Word has length 4 [2023-11-24 21:47:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:28,416 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 642 transitions. [2023-11-24 21:47:28,416 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 21:47:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 642 transitions. [2023-11-24 21:47:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:47:28,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:28,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:47:28,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:28,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:28,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:28,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash 33968853, now seen corresponding path program 1 times [2023-11-24 21:47:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193309917] [2023-11-24 21:47:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:28,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:28,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:28,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:28,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:47:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:28,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:28,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:28,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:47:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:28,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:28,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193309917] [2023-11-24 21:47:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193309917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742314628] [2023-11-24 21:47:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:28,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:28,794 INFO L87 Difference]: Start difference. First operand 596 states and 642 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 21:47:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:30,445 INFO L93 Difference]: Finished difference Result 557 states and 604 transitions. [2023-11-24 21:47:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:30,449 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 21:47:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:30,453 INFO L225 Difference]: With dead ends: 557 [2023-11-24 21:47:30,454 INFO L226 Difference]: Without dead ends: 557 [2023-11-24 21:47:30,454 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 21:47:30,456 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 536 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:30,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 288 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:47:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-24 21:47:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 547. [2023-11-24 21:47:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 259 states have (on average 2.189189189189189) internal successors, (567), 541 states have internal predecessors, (567), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 593 transitions. [2023-11-24 21:47:30,479 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 593 transitions. Word has length 4 [2023-11-24 21:47:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:30,479 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 593 transitions. [2023-11-24 21:47:30,479 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 21:47:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 593 transitions. [2023-11-24 21:47:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 21:47:30,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:30,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 21:47:30,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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)] Ended with exit code 0 [2023-11-24 21:47:30,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:30,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash 33968854, now seen corresponding path program 1 times [2023-11-24 21:47:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952328752] [2023-11-24 21:47:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:30,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:30,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:30,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:47:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:30,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:47:30,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:30,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:47:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:30,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:30,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952328752] [2023-11-24 21:47:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952328752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:30,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:30,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748198446] [2023-11-24 21:47:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:30,849 INFO L87 Difference]: Start difference. First operand 547 states and 593 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 21:47:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:33,031 INFO L93 Difference]: Finished difference Result 607 states and 657 transitions. [2023-11-24 21:47:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:33,033 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 21:47:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:33,038 INFO L225 Difference]: With dead ends: 607 [2023-11-24 21:47:33,038 INFO L226 Difference]: Without dead ends: 607 [2023-11-24 21:47:33,038 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 21:47:33,040 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 230 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:33,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 610 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 21:47:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-24 21:47:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 560. [2023-11-24 21:47:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 282 states have (on average 2.1773049645390072) internal successors, (614), 554 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 640 transitions. [2023-11-24 21:47:33,064 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 640 transitions. Word has length 4 [2023-11-24 21:47:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:33,064 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 640 transitions. [2023-11-24 21:47:33,064 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 21:47:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 640 transitions. [2023-11-24 21:47:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:47:33,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:33,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:33,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:33,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:33,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1053856852, now seen corresponding path program 1 times [2023-11-24 21:47:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66016918] [2023-11-24 21:47:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:33,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:33,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:33,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:47:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:33,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:47:33,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:33,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:33,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:33,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66016918] [2023-11-24 21:47:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66016918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:33,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108801945] [2023-11-24 21:47:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:33,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:33,400 INFO L87 Difference]: Start difference. First operand 560 states and 640 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 21:47:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:34,512 INFO L93 Difference]: Finished difference Result 1076 states and 1216 transitions. [2023-11-24 21:47:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:34,513 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 21:47:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:34,520 INFO L225 Difference]: With dead ends: 1076 [2023-11-24 21:47:34,520 INFO L226 Difference]: Without dead ends: 1076 [2023-11-24 21:47:34,520 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 21:47:34,521 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 512 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:34,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1206 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 21:47:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-24 21:47:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 561. [2023-11-24 21:47:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 283 states have (on average 2.1731448763250882) internal successors, (615), 555 states have internal predecessors, (615), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 641 transitions. [2023-11-24 21:47:34,548 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 641 transitions. Word has length 5 [2023-11-24 21:47:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:34,548 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 641 transitions. [2023-11-24 21:47:34,548 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 21:47:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 641 transitions. [2023-11-24 21:47:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:47:34,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:34,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:34,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:34,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:34,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash -966567489, now seen corresponding path program 1 times [2023-11-24 21:47:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912544978] [2023-11-24 21:47:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:34,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:34,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:34,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:47:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:34,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:47:34,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:34,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:34,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:34,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912544978] [2023-11-24 21:47:34,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912544978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:34,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:34,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:34,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070068720] [2023-11-24 21:47:34,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:34,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:34,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:34,919 INFO L87 Difference]: Start difference. First operand 561 states and 641 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 21:47:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:35,596 INFO L93 Difference]: Finished difference Result 522 states and 601 transitions. [2023-11-24 21:47:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:35,598 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 21:47:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:35,601 INFO L225 Difference]: With dead ends: 522 [2023-11-24 21:47:35,601 INFO L226 Difference]: Without dead ends: 522 [2023-11-24 21:47:35,602 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 21:47:35,603 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 70 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:35,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 889 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:47:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-24 21:47:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2023-11-24 21:47:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 268 states have (on average 2.1455223880597014) internal successors, (575), 516 states have internal predecessors, (575), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 601 transitions. [2023-11-24 21:47:35,620 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 601 transitions. Word has length 10 [2023-11-24 21:47:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:35,620 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 601 transitions. [2023-11-24 21:47:35,620 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 21:47:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 601 transitions. [2023-11-24 21:47:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:47:35,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:35,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:35,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:35,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:35,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1158424583, now seen corresponding path program 1 times [2023-11-24 21:47:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817699684] [2023-11-24 21:47:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:35,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:35,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:35,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:47:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:35,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:35,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:36,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:36,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817699684] [2023-11-24 21:47:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817699684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:36,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276147111] [2023-11-24 21:47:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:36,015 INFO L87 Difference]: Start difference. First operand 522 states and 601 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 21:47:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:36,898 INFO L93 Difference]: Finished difference Result 508 states and 580 transitions. [2023-11-24 21:47:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:36,901 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 21:47:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:36,905 INFO L225 Difference]: With dead ends: 508 [2023-11-24 21:47:36,905 INFO L226 Difference]: Without dead ends: 508 [2023-11-24 21:47:36,905 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 21:47:36,906 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 58 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:36,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1290 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:47:36,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-24 21:47:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2023-11-24 21:47:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 267 states have (on average 2.0711610486891385) internal successors, (553), 501 states have internal predecessors, (553), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 579 transitions. [2023-11-24 21:47:36,924 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 579 transitions. Word has length 12 [2023-11-24 21:47:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:36,924 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 579 transitions. [2023-11-24 21:47:36,924 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 21:47:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 579 transitions. [2023-11-24 21:47:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:47:36,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:36,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:36,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/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)] Ended with exit code 0 [2023-11-24 21:47:37,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:37,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:37,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1759835768, now seen corresponding path program 1 times [2023-11-24 21:47:37,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:37,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851710893] [2023-11-24 21:47:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:37,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:37,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:37,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:47:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:37,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:47:37,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:37,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:47:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:37,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:37,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851710893] [2023-11-24 21:47:37,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851710893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:37,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:37,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321567958] [2023-11-24 21:47:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:37,582 INFO L87 Difference]: Start difference. First operand 507 states and 579 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 21:47:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:40,193 INFO L93 Difference]: Finished difference Result 550 states and 592 transitions. [2023-11-24 21:47:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:40,194 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 21:47:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:40,198 INFO L225 Difference]: With dead ends: 550 [2023-11-24 21:47:40,199 INFO L226 Difference]: Without dead ends: 550 [2023-11-24 21:47:40,199 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 21:47:40,200 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 175 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:40,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 776 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 21:47:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-24 21:47:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 503. [2023-11-24 21:47:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 267 states have (on average 2.056179775280899) internal successors, (549), 497 states have internal predecessors, (549), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 575 transitions. [2023-11-24 21:47:40,221 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 575 transitions. Word has length 26 [2023-11-24 21:47:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:40,225 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 575 transitions. [2023-11-24 21:47:40,225 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 21:47:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 575 transitions. [2023-11-24 21:47:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:47:40,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:40,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:40,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:40,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:40,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1759835769, now seen corresponding path program 1 times [2023-11-24 21:47:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:40,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530665117] [2023-11-24 21:47:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:40,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:40,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:40,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:47:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:40,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:47:40,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:40,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:47:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:40,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:40,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530665117] [2023-11-24 21:47:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530665117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:40,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185113530] [2023-11-24 21:47:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:40,721 INFO L87 Difference]: Start difference. First operand 503 states and 575 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 21:47:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:42,323 INFO L93 Difference]: Finished difference Result 509 states and 582 transitions. [2023-11-24 21:47:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:42,324 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 21:47:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:42,327 INFO L225 Difference]: With dead ends: 509 [2023-11-24 21:47:42,327 INFO L226 Difference]: Without dead ends: 509 [2023-11-24 21:47:42,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:42,328 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 463 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 423 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:47:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-24 21:47:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 499. [2023-11-24 21:47:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 267 states have (on average 2.041198501872659) internal successors, (545), 493 states have internal predecessors, (545), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 571 transitions. [2023-11-24 21:47:42,342 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 571 transitions. Word has length 26 [2023-11-24 21:47:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:42,342 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 571 transitions. [2023-11-24 21:47:42,343 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 21:47:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 571 transitions. [2023-11-24 21:47:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 21:47:42,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:42,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:42,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:42,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:42,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:42,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 655180289, now seen corresponding path program 1 times [2023-11-24 21:47:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:42,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385019574] [2023-11-24 21:47:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:42,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:42,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:47:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:42,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:42,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:42,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:42,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385019574] [2023-11-24 21:47:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385019574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:42,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807897784] [2023-11-24 21:47:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:42,819 INFO L87 Difference]: Start difference. First operand 499 states and 571 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 21:47:43,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:43,637 INFO L93 Difference]: Finished difference Result 493 states and 561 transitions. [2023-11-24 21:47:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2023-11-24 21:47:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:43,644 INFO L225 Difference]: With dead ends: 493 [2023-11-24 21:47:43,644 INFO L226 Difference]: Without dead ends: 493 [2023-11-24 21:47:43,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:43,645 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 23 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:43,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1276 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:47:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-24 21:47:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2023-11-24 21:47:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 261 states have (on average 2.049808429118774) internal successors, (535), 487 states have internal predecessors, (535), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 561 transitions. [2023-11-24 21:47:43,678 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 561 transitions. Word has length 42 [2023-11-24 21:47:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:43,678 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 561 transitions. [2023-11-24 21:47:43,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 21:47:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 561 transitions. [2023-11-24 21:47:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 21:47:43,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:43,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:43,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-24 21:47:43,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:43,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:43,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1733095522, now seen corresponding path program 1 times [2023-11-24 21:47:43,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:43,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53528734] [2023-11-24 21:47:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:43,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:43,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:43,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:47:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:44,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:44,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:44,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:44,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:44,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53528734] [2023-11-24 21:47:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53528734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397551612] [2023-11-24 21:47:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:44,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:44,445 INFO L87 Difference]: Start difference. First operand 493 states and 561 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 21:47:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:45,119 INFO L93 Difference]: Finished difference Result 536 states and 604 transitions. [2023-11-24 21:47:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2023-11-24 21:47:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:45,125 INFO L225 Difference]: With dead ends: 536 [2023-11-24 21:47:45,125 INFO L226 Difference]: Without dead ends: 536 [2023-11-24 21:47:45,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 21:47:45,126 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 59 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:45,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 815 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:47:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-24 21:47:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2023-11-24 21:47:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 304 states have (on average 1.9013157894736843) internal successors, (578), 530 states have internal predecessors, (578), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 604 transitions. [2023-11-24 21:47:45,143 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 604 transitions. Word has length 46 [2023-11-24 21:47:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:45,144 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 604 transitions. [2023-11-24 21:47:45,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 21:47:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 604 transitions. [2023-11-24 21:47:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 21:47:45,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:45,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:45,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-24 21:47:45,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:45,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:45,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 739366790, now seen corresponding path program 1 times [2023-11-24 21:47:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:45,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770753680] [2023-11-24 21:47:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:45,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:45,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:47:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:45,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:47:45,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:45,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:47:45,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:47:46,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:47:46,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:47:46,488 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:47:46,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 21:47:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:46,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:46,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770753680] [2023-11-24 21:47:46,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770753680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:46,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:47:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685806125] [2023-11-24 21:47:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:46,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:46,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:46,516 INFO L87 Difference]: Start difference. First operand 536 states and 604 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 21:47:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:48,382 INFO L93 Difference]: Finished difference Result 508 states and 577 transitions. [2023-11-24 21:47:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:48,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2023-11-24 21:47:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:48,387 INFO L225 Difference]: With dead ends: 508 [2023-11-24 21:47:48,388 INFO L226 Difference]: Without dead ends: 508 [2023-11-24 21:47:48,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:48,389 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 354 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:48,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 250 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 21:47:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-24 21:47:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 475. [2023-11-24 21:47:48,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 281 states have (on average 1.7188612099644127) internal successors, (483), 469 states have internal predecessors, (483), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 509 transitions. [2023-11-24 21:47:48,407 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 509 transitions. Word has length 49 [2023-11-24 21:47:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:48,407 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 509 transitions. [2023-11-24 21:47:48,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 21:47:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 509 transitions. [2023-11-24 21:47:48,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 21:47:48,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:48,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:48,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:48,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:48,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:48,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -963069239, now seen corresponding path program 1 times [2023-11-24 21:47:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:48,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20400841] [2023-11-24 21:47:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:48,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:48,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:48,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:47:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:48,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:47:48,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:48,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:47:48,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-24 21:47:49,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 21:47:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:49,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:49,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20400841] [2023-11-24 21:47:49,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20400841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:49,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:49,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477009989] [2023-11-24 21:47:49,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:49,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:47:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:47:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:49,031 INFO L87 Difference]: Start difference. First operand 475 states and 509 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 21:47:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:51,589 INFO L93 Difference]: Finished difference Result 474 states and 508 transitions. [2023-11-24 21:47:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2023-11-24 21:47:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:51,597 INFO L225 Difference]: With dead ends: 474 [2023-11-24 21:47:51,597 INFO L226 Difference]: Without dead ends: 474 [2023-11-24 21:47:51,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:51,599 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 3 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:51,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1069 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-24 21:47:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-24 21:47:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-11-24 21:47:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 468 states have internal predecessors, (482), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 508 transitions. [2023-11-24 21:47:51,615 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 508 transitions. Word has length 53 [2023-11-24 21:47:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 508 transitions. [2023-11-24 21:47:51,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 21:47:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 508 transitions. [2023-11-24 21:47:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 21:47:51,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:51,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:51,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:51,837 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:51,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -963069238, now seen corresponding path program 1 times [2023-11-24 21:47:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869338057] [2023-11-24 21:47:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:51,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:51,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:51,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:51,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:47:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:52,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:47:52,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:52,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:47:52,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-24 21:47:52,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-24 21:47:52,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-24 21:47:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:52,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:52,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869338057] [2023-11-24 21:47:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869338057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:52,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301140155] [2023-11-24 21:47:52,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:52,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:47:52,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:52,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:47:52,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:52,255 INFO L87 Difference]: Start difference. First operand 474 states and 508 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 21:47:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:55,126 INFO L93 Difference]: Finished difference Result 473 states and 507 transitions. [2023-11-24 21:47:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2023-11-24 21:47:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:55,131 INFO L225 Difference]: With dead ends: 473 [2023-11-24 21:47:55,131 INFO L226 Difference]: Without dead ends: 473 [2023-11-24 21:47:55,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:47:55,132 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:55,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1079 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-24 21:47:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-24 21:47:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2023-11-24 21:47:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 280 states have (on average 1.7178571428571427) internal successors, (481), 467 states have internal predecessors, (481), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:47:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 507 transitions. [2023-11-24 21:47:55,148 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 507 transitions. Word has length 53 [2023-11-24 21:47:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:55,149 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 507 transitions. [2023-11-24 21:47:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 21:47:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 507 transitions. [2023-11-24 21:47:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 21:47:55,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:55,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:55,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:55,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:55,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:55,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1841189133, now seen corresponding path program 1 times [2023-11-24 21:47:55,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709824835] [2023-11-24 21:47:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:55,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:55,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:55,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:55,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:47:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:55,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:47:55,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:55,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:47:55,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709824835] [2023-11-24 21:47:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709824835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:55,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:47:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976025205] [2023-11-24 21:47:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:55,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:55,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:55,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:55,695 INFO L87 Difference]: Start difference. First operand 473 states and 507 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:47:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:56,509 INFO L93 Difference]: Finished difference Result 475 states and 510 transitions. [2023-11-24 21:47:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-11-24 21:47:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:56,515 INFO L225 Difference]: With dead ends: 475 [2023-11-24 21:47:56,515 INFO L226 Difference]: Without dead ends: 475 [2023-11-24 21:47:56,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:47:56,516 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:56,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1215 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:47:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-24 21:47:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2023-11-24 21:47:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 281 states have (on average 1.7188612099644127) internal successors, (483), 469 states have internal predecessors, (483), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-24 21:47:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 510 transitions. [2023-11-24 21:47:56,531 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 510 transitions. Word has length 59 [2023-11-24 21:47:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:56,531 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 510 transitions. [2023-11-24 21:47:56,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:47:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 510 transitions. [2023-11-24 21:47:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-24 21:47:56,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:56,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:56,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:56,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:56,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:56,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 976186082, now seen corresponding path program 1 times [2023-11-24 21:47:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984378393] [2023-11-24 21:47:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:56,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:56,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:56,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:56,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:47:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:57,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:47:57,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:57,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:57,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984378393] [2023-11-24 21:47:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984378393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:57,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:47:57,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-24 21:47:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769510508] [2023-11-24 21:47:57,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:47:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:47:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:47:57,188 INFO L87 Difference]: Start difference. First operand 475 states and 510 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:47:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:47:58,268 INFO L93 Difference]: Finished difference Result 484 states and 524 transitions. [2023-11-24 21:47:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:47:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2023-11-24 21:47:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:47:58,273 INFO L225 Difference]: With dead ends: 484 [2023-11-24 21:47:58,273 INFO L226 Difference]: Without dead ends: 484 [2023-11-24 21:47:58,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:47:58,274 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 7 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:47:58,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1213 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:47:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-24 21:47:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 483. [2023-11-24 21:47:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 288 states have (on average 1.7222222222222223) internal successors, (496), 476 states have internal predecessors, (496), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-24 21:47:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 523 transitions. [2023-11-24 21:47:58,288 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 523 transitions. Word has length 60 [2023-11-24 21:47:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:47:58,289 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 523 transitions. [2023-11-24 21:47:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:47:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 523 transitions. [2023-11-24 21:47:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-24 21:47:58,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:47:58,290 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:58,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:47:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:58,496 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:47:58,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1910464947, now seen corresponding path program 2 times [2023-11-24 21:47:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:47:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312859245] [2023-11-24 21:47:58,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:47:58,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:47:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:47:58,499 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:47:58,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 21:47:58,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:47:58,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:47:58,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:47:58,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:47:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:59,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:47:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:59,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:47:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312859245] [2023-11-24 21:47:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312859245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:47:59,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:47:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-24 21:47:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926264397] [2023-11-24 21:47:59,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:47:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:47:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:47:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:47:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:47:59,312 INFO L87 Difference]: Start difference. First operand 483 states and 523 transitions. Second operand has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:48:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:48:01,699 INFO L93 Difference]: Finished difference Result 498 states and 545 transitions. [2023-11-24 21:48:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 21:48:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-11-24 21:48:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:48:01,702 INFO L225 Difference]: With dead ends: 498 [2023-11-24 21:48:01,702 INFO L226 Difference]: Without dead ends: 496 [2023-11-24 21:48:01,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-24 21:48:01,704 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 12 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:48:01,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3231 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 21:48:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-24 21:48:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2023-11-24 21:48:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 297 states have (on average 1.7104377104377104) internal successors, (508), 485 states have internal predecessors, (508), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-24 21:48:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 535 transitions. [2023-11-24 21:48:01,719 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 535 transitions. Word has length 63 [2023-11-24 21:48:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:48:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 535 transitions. [2023-11-24 21:48:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:48:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 535 transitions. [2023-11-24 21:48:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-24 21:48:01,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:48:01,721 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:01,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-24 21:48:01,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:01,928 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-24 21:48:01,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash -718739923, now seen corresponding path program 3 times [2023-11-24 21:48:01,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:01,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323667001] [2023-11-24 21:48:01,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:48:01,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:01,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:01,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2287ffd-5a57-4a4f-b2f1-4bdb2a171c2a/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-24 21:48:02,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-24 21:48:02,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:48:02,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:48:02,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:02,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:48:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:03,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323667001] [2023-11-24 21:48:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323667001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:48:03,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:48:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-24 21:48:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323727821] [2023-11-24 21:48:03,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:48:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 21:48:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 21:48:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-24 21:48:03,724 INFO L87 Difference]: Start difference. First operand 492 states and 535 transitions. Second operand has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)