./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:37:55,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:37:55,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:37:55,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:37:55,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:37:55,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:37:55,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:37:55,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:37:55,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:37:55,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:37:55,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:37:55,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:37:55,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:37:55,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:37:55,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:37:55,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:37:55,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:37:55,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:37:55,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:37:55,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:37:55,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:37:55,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:37:55,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:37:55,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:37:55,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:37:55,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:37:55,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:37:55,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:37:55,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:37:55,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:37:55,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:37:55,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:37:55,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:37:55,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:37:55,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:37:55,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:37:55,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:37:55,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:37:55,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:37:55,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:37:55,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:37:55,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:37:55,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:37:55,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:37:55,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:37:55,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:37:55,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:37:55,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:37:55,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:37:55,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:37:55,411 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:37:55,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:37:55,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:37:55,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:37:55,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:37:55,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:37:55,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:37:55,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:37:55,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:37:55,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:37:55,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:37:55,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:37:55,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:37:55,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:37:55,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:37:55,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:37:55,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:37:55,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:55,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:37:55,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:37:55,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:37:55,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:37:55,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2022-10-17 10:37:55,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:37:55,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:37:55,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:37:55,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:37:55,771 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:37:55,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-10-17 10:37:55,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/3ad5950f2/404d10dc2cc344b1a94f675c7ecf64b8/FLAG6d2606ac7 [2022-10-17 10:37:56,446 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:37:56,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-10-17 10:37:56,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/3ad5950f2/404d10dc2cc344b1a94f675c7ecf64b8/FLAG6d2606ac7 [2022-10-17 10:37:56,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/3ad5950f2/404d10dc2cc344b1a94f675c7ecf64b8 [2022-10-17 10:37:56,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:37:56,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:37:56,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:56,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:37:56,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:37:56,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:56" (1/1) ... [2022-10-17 10:37:56,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed194fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:56, skipping insertion in model container [2022-10-17 10:37:56,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:56" (1/1) ... [2022-10-17 10:37:56,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:37:56,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:37:57,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-10-17 10:37:57,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-10-17 10:37:57,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:37:57,346 ERROR L326 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) [2022-10-17 10:37:57,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6062252e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:57, skipping insertion in model container [2022-10-17 10:37:57,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:57,348 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:37:57,350 INFO L158 Benchmark]: Toolchain (without parser) took 683.53ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 55.5MB in the beginning and 67.9MB in the end (delta: -12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 10:37:57,351 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:37:57,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.20ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 55.2MB in the beginning and 67.9MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:37:57,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.20ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 55.2MB in the beginning and 67.9MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:37:59,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:37:59,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:37:59,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:37:59,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:37:59,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:37:59,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:37:59,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:37:59,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:37:59,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:37:59,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:37:59,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:37:59,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:37:59,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:37:59,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:37:59,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:37:59,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:37:59,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:37:59,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:37:59,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:37:59,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:37:59,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:37:59,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:37:59,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:37:59,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:37:59,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:37:59,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:37:59,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:37:59,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:37:59,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:37:59,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:37:59,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:37:59,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:37:59,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:37:59,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:37:59,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:37:59,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:37:59,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:37:59,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:37:59,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:37:59,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:37:59,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:37:59,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:37:59,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:37:59,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:37:59,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:37:59,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:37:59,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:37:59,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:37:59,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:37:59,789 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:37:59,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:37:59,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:37:59,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:37:59,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:37:59,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:37:59,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:37:59,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:37:59,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:37:59,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:37:59,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:37:59,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:37:59,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:37:59,794 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:37:59,794 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:37:59,794 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:37:59,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:37:59,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:37:59,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:37:59,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:59,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:37:59,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:37:59,797 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:37:59,797 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:37:59,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:37:59,798 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2022-10-17 10:38:00,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:00,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:00,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:00,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:00,260 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:00,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-10-17 10:38:00,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/df93d1603/a90a11ca87114bf49380d56c53b67b87/FLAGdb3f30949 [2022-10-17 10:38:01,072 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:01,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2022-10-17 10:38:01,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/df93d1603/a90a11ca87114bf49380d56c53b67b87/FLAGdb3f30949 [2022-10-17 10:38:01,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/data/df93d1603/a90a11ca87114bf49380d56c53b67b87 [2022-10-17 10:38:01,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:01,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:01,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:01,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:01,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:01,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:01" (1/1) ... [2022-10-17 10:38:01,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595528b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:01, skipping insertion in model container [2022-10-17 10:38:01,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:01" (1/1) ... [2022-10-17 10:38:01,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:01,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:01,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-10-17 10:38:02,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-10-17 10:38:02,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:02,118 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:38:02,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:02,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-10-17 10:38:02,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-10-17 10:38:02,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:02,262 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:02,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2022-10-17 10:38:02,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2022-10-17 10:38:02,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:02,473 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:02,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02 WrapperNode [2022-10-17 10:38:02,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:02,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:02,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:02,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:02,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,634 INFO L138 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2022-10-17 10:38:02,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:02,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:02,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:02,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:02,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:02,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:02,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:02,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:02,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (1/1) ... [2022-10-17 10:38:02,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:02,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:02,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:02,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 10:38:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:38:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:38:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:38:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:38:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:38:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:38:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:38:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:38:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:38:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:38:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:38:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:38:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:38:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:38:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:03,152 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:03,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:03,158 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:38:07,707 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:07,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:07,737 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-10-17 10:38:07,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:07 BoogieIcfgContainer [2022-10-17 10:38:07,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:07,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:38:07,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:38:07,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:38:07,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:38:01" (1/3) ... [2022-10-17 10:38:07,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bb99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:07, skipping insertion in model container [2022-10-17 10:38:07,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:02" (2/3) ... [2022-10-17 10:38:07,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bb99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:07, skipping insertion in model container [2022-10-17 10:38:07,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:07" (3/3) ... [2022-10-17 10:38:07,757 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2022-10-17 10:38:07,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:38:07,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-10-17 10:38:07,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:07,872 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=FINITE_AUTOMATA, 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;@2326ad0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:07,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-10-17 10:38:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:38:07,890 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:07,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:38:07,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:07,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-10-17 10:38:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:07,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454057859] [2022-10-17 10:38:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:07,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:07,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:07,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:38:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:08,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:38:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:08,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:08,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:08,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:08,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454057859] [2022-10-17 10:38:08,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454057859] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:08,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:08,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:08,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716249867] [2022-10-17 10:38:08,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:08,250 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 10:38:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:09,878 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2022-10-17 10:38:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-17 10:38:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:09,902 INFO L225 Difference]: With dead ends: 869 [2022-10-17 10:38:09,907 INFO L226 Difference]: Without dead ends: 867 [2022-10-17 10:38:09,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:09,913 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:38:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-10-17 10:38:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2022-10-17 10:38:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2022-10-17 10:38:10,022 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2022-10-17 10:38:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:10,023 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2022-10-17 10:38:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 10:38:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2022-10-17 10:38:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:38:10,024 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:10,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:38:10,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:10,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:10,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-10-17 10:38:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129561727] [2022-10-17 10:38:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:10,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:10,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:10,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:38:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:10,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:38:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:10,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:10,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:10,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129561727] [2022-10-17 10:38:10,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129561727] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:10,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:10,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359645332] [2022-10-17 10:38:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:10,406 INFO L87 Difference]: Start difference. First operand 866 states and 923 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 10:38:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:13,074 INFO L93 Difference]: Finished difference Result 1085 states and 1173 transitions. [2022-10-17 10:38:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:13,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-17 10:38:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:13,083 INFO L225 Difference]: With dead ends: 1085 [2022-10-17 10:38:13,083 INFO L226 Difference]: Without dead ends: 1085 [2022-10-17 10:38:13,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:13,085 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 240 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:13,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1312 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-10-17 10:38:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-10-17 10:38:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 998. [2022-10-17 10:38:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 571 states have (on average 2.0052539404553413) internal successors, (1145), 992 states have internal predecessors, (1145), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:38:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1171 transitions. [2022-10-17 10:38:13,121 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1171 transitions. Word has length 3 [2022-10-17 10:38:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:13,121 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1171 transitions. [2022-10-17 10:38:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 10:38:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1171 transitions. [2022-10-17 10:38:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:38:13,122 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:13,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:13,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:13,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-10-17 10:38:13,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:13,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002306486] [2022-10-17 10:38:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:13,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:13,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:13,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:38:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:13,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:38:13,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:13,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:13,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:38:13,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 14 [2022-10-17 10:38:13,630 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:38:13,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:13,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:13,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002306486] [2022-10-17 10:38:13,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002306486] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:13,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:13,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146199191] [2022-10-17 10:38:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:13,663 INFO L87 Difference]: Start difference. First operand 998 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-10-17 10:38:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:15,765 INFO L93 Difference]: Finished difference Result 988 states and 1160 transitions. [2022-10-17 10:38:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-10-17 10:38:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:15,771 INFO L225 Difference]: With dead ends: 988 [2022-10-17 10:38:15,771 INFO L226 Difference]: Without dead ends: 988 [2022-10-17 10:38:15,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:15,773 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 874 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:15,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 347 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:38:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-10-17 10:38:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 855. [2022-10-17 10:38:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 443 states have (on average 2.020316027088036) internal successors, (895), 849 states have internal predecessors, (895), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 911 transitions. [2022-10-17 10:38:15,798 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 911 transitions. Word has length 7 [2022-10-17 10:38:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 911 transitions. [2022-10-17 10:38:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-10-17 10:38:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 911 transitions. [2022-10-17 10:38:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:38:15,800 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:15,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:15,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:16,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-10-17 10:38:16,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:16,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375982767] [2022-10-17 10:38:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:16,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:16,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:16,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:38:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:16,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:38:16,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:16,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:16,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:16,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375982767] [2022-10-17 10:38:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375982767] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:16,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:16,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837880934] [2022-10-17 10:38:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:16,165 INFO L87 Difference]: Start difference. First operand 855 states and 911 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:38:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:17,719 INFO L93 Difference]: Finished difference Result 1031 states and 1118 transitions. [2022-10-17 10:38:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:17,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-10-17 10:38:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:17,727 INFO L225 Difference]: With dead ends: 1031 [2022-10-17 10:38:17,727 INFO L226 Difference]: Without dead ends: 1031 [2022-10-17 10:38:17,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:17,728 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 814 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:17,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 871 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:38:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-10-17 10:38:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 808. [2022-10-17 10:38:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 443 states have (on average 1.9142212189616252) internal successors, (848), 802 states have internal predecessors, (848), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 864 transitions. [2022-10-17 10:38:17,760 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 864 transitions. Word has length 8 [2022-10-17 10:38:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:17,760 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 864 transitions. [2022-10-17 10:38:17,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:38:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 864 transitions. [2022-10-17 10:38:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:38:17,761 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:17,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:17,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:17,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-10-17 10:38:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:17,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517405055] [2022-10-17 10:38:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:17,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:38:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:18,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:38:18,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:18,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:18,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:18,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517405055] [2022-10-17 10:38:18,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517405055] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:18,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:18,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314377387] [2022-10-17 10:38:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:18,146 INFO L87 Difference]: Start difference. First operand 808 states and 864 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:38:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:20,402 INFO L93 Difference]: Finished difference Result 1098 states and 1187 transitions. [2022-10-17 10:38:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:20,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-10-17 10:38:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:20,429 INFO L225 Difference]: With dead ends: 1098 [2022-10-17 10:38:20,429 INFO L226 Difference]: Without dead ends: 1098 [2022-10-17 10:38:20,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:20,430 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 501 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:20,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1229 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:38:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-10-17 10:38:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 830. [2022-10-17 10:38:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 475 states have (on average 1.9031578947368422) internal successors, (904), 824 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 920 transitions. [2022-10-17 10:38:20,454 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 920 transitions. Word has length 8 [2022-10-17 10:38:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:20,454 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 920 transitions. [2022-10-17 10:38:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:38:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 920 transitions. [2022-10-17 10:38:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:38:20,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:20,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:20,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:20,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2022-10-17 10:38:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:20,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024310954] [2022-10-17 10:38:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:20,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:38:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:20,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:38:20,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:20,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:38:20,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:38:20,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:38:20,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 39 [2022-10-17 10:38:20,905 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:38:20,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-10-17 10:38:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:20,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:20,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024310954] [2022-10-17 10:38:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024310954] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:20,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:20,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:38:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143183664] [2022-10-17 10:38:20,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:20,925 INFO L87 Difference]: Start difference. First operand 830 states and 920 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-10-17 10:38:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:22,154 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2022-10-17 10:38:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2022-10-17 10:38:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:22,160 INFO L225 Difference]: With dead ends: 1051 [2022-10-17 10:38:22,161 INFO L226 Difference]: Without dead ends: 1051 [2022-10-17 10:38:22,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:38:22,162 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 237 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:22,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2333 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:38:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-10-17 10:38:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 832. [2022-10-17 10:38:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 477 states have (on average 1.89937106918239) internal successors, (906), 826 states have internal predecessors, (906), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 922 transitions. [2022-10-17 10:38:22,185 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 922 transitions. Word has length 10 [2022-10-17 10:38:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:22,185 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 922 transitions. [2022-10-17 10:38:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-10-17 10:38:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 922 transitions. [2022-10-17 10:38:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:38:22,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:22,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:22,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:22,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-10-17 10:38:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:22,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288251710] [2022-10-17 10:38:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:22,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:22,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:22,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:22,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:38:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:22,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:38:22,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:22,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:22,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288251710] [2022-10-17 10:38:22,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288251710] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:22,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:22,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314402173] [2022-10-17 10:38:22,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:22,632 INFO L87 Difference]: Start difference. First operand 832 states and 922 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-10-17 10:38:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:22,661 INFO L93 Difference]: Finished difference Result 801 states and 890 transitions. [2022-10-17 10:38:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-10-17 10:38:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:22,667 INFO L225 Difference]: With dead ends: 801 [2022-10-17 10:38:22,667 INFO L226 Difference]: Without dead ends: 801 [2022-10-17 10:38:22,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:22,669 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 776 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:22,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 839 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:38:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-10-17 10:38:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 790. [2022-10-17 10:38:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 459 states have (on average 1.8801742919389979) internal successors, (863), 784 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 879 transitions. [2022-10-17 10:38:22,696 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 879 transitions. Word has length 18 [2022-10-17 10:38:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:22,696 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 879 transitions. [2022-10-17 10:38:22,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-10-17 10:38:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 879 transitions. [2022-10-17 10:38:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:38:22,697 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:22,698 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] [2022-10-17 10:38:22,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:22,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:22,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-10-17 10:38:22,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:22,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413442270] [2022-10-17 10:38:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:22,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:22,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:22,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:22,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:38:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:23,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:38:23,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:23,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:23,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413442270] [2022-10-17 10:38:23,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413442270] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:23,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:23,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:38:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780435014] [2022-10-17 10:38:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:23,109 INFO L87 Difference]: Start difference. First operand 790 states and 879 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-10-17 10:38:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:23,184 INFO L93 Difference]: Finished difference Result 780 states and 862 transitions. [2022-10-17 10:38:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-10-17 10:38:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:23,189 INFO L225 Difference]: With dead ends: 780 [2022-10-17 10:38:23,189 INFO L226 Difference]: Without dead ends: 780 [2022-10-17 10:38:23,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:38:23,190 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 747 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:23,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1549 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:38:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-10-17 10:38:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 768. [2022-10-17 10:38:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 762 states have internal predecessors, (834), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 850 transitions. [2022-10-17 10:38:23,214 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 850 transitions. Word has length 20 [2022-10-17 10:38:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:23,214 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 850 transitions. [2022-10-17 10:38:23,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-10-17 10:38:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 850 transitions. [2022-10-17 10:38:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:38:23,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:23,216 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] [2022-10-17 10:38:23,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:23,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:23,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-10-17 10:38:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:23,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903185707] [2022-10-17 10:38:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:23,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:23,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:23,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:38:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:38:23,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:23,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:23,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:23,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:23,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903185707] [2022-10-17 10:38:23,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903185707] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:23,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:23,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984774095] [2022-10-17 10:38:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:23,689 INFO L87 Difference]: Start difference. First operand 768 states and 850 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-10-17 10:38:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:25,366 INFO L93 Difference]: Finished difference Result 998 states and 1111 transitions. [2022-10-17 10:38:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-10-17 10:38:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:25,373 INFO L225 Difference]: With dead ends: 998 [2022-10-17 10:38:25,373 INFO L226 Difference]: Without dead ends: 998 [2022-10-17 10:38:25,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:38:25,374 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1357 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:25,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 781 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:38:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-10-17 10:38:25,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 764. [2022-10-17 10:38:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 451 states have (on average 1.8403547671840355) internal successors, (830), 758 states have internal predecessors, (830), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:38:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 846 transitions. [2022-10-17 10:38:25,392 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 846 transitions. Word has length 34 [2022-10-17 10:38:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 846 transitions. [2022-10-17 10:38:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-10-17 10:38:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 846 transitions. [2022-10-17 10:38:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:38:25,394 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:25,394 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] [2022-10-17 10:38:25,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:25,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:38:25,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:38:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-10-17 10:38:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:38:25,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807204969] [2022-10-17 10:38:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:25,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:38:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:38:25,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:38:25,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc395f4-ce5a-4f06-8584-3ec54112ff7b/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:38:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:25,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:38:25,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:25,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:38:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:26,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:26,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:38:26,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807204969] [2022-10-17 10:38:26,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807204969] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:26,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:26,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639429205] [2022-10-17 10:38:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:38:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:26,033 INFO L87 Difference]: Start difference. First operand 764 states and 846 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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)