./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.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_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/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_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/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_21e1538e-a797-43e8-b300-3f94341d3829/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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- 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 10:19:12,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:19:12,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:19:12,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:19:12,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:19:12,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:19:12,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:19:12,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:19:12,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:19:12,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:19:12,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:19:12,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:19:12,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:19:12,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:19:12,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:19:12,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:19:12,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:19:12,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:19:12,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:19:12,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:19:12,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:19:12,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:19:12,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:19:12,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:19:12,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:19:12,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:19:12,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:19:12,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:19:12,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:19:12,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:19:12,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:19:12,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:19:12,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:19:12,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:19:12,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:19:12,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:19:12,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:19:12,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:19:12,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:19:12,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:19:12,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:19:12,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:19:12,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:19:12,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:19:12,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:19:12,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:19:12,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:19:12,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:19:12,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:19:12,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:19:12,498 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:19:12,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:19:12,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:19:12,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:19:12,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:19:12,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:19:12,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:19:12,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:19:12,502 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:19:12,502 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:19:12,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:19:12,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:19:12,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:19:12,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:19:12,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:19:12,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:19:12,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:19:12,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:19:12,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:19:12,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:19:12,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:19:12,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:19:12,506 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_21e1538e-a797-43e8-b300-3f94341d3829/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2022-10-17 10:19:12,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:19:12,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:19:12,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:19:12,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:19:12,829 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:19:12,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2022-10-17 10:19:12,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/fd65e6046/d1ef13dff3544a86890a9bf58893c962/FLAG99dec5db0 [2022-10-17 10:19:13,451 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:19:13,457 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2022-10-17 10:19:13,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/fd65e6046/d1ef13dff3544a86890a9bf58893c962/FLAG99dec5db0 [2022-10-17 10:19:13,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/fd65e6046/d1ef13dff3544a86890a9bf58893c962 [2022-10-17 10:19:13,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:19:13,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:19:13,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:19:13,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:19:13,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:19:13,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:19:13" (1/1) ... [2022-10-17 10:19:13,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68104fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:13, skipping insertion in model container [2022-10-17 10:19:13,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:19:13" (1/1) ... [2022-10-17 10:19:13,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:19:13,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:19:14,153 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2022-10-17 10:19:14,157 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2022-10-17 10:19:14,159 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2022-10-17 10:19:14,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:19:14,173 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:19:14,210 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2022-10-17 10:19:14,211 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2022-10-17 10:19:14,213 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2022-10-17 10:19:14,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:19:14,246 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:19:14,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14 WrapperNode [2022-10-17 10:19:14,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:19:14,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:19:14,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:19:14,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:19:14,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,295 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2022-10-17 10:19:14,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:19:14,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:19:14,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:19:14,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:19:14,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:19:14,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:19:14,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:19:14,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:19:14,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (1/1) ... [2022-10-17 10:19:14,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:19:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:19:14,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:19:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:19:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:19:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:19:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:19:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:19:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:19:14,560 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:19:14,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:19:15,198 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:19:15,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:19:15,206 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-17 10:19:15,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:15 BoogieIcfgContainer [2022-10-17 10:19:15,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:19:15,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:19:15,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:19:15,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:19:15,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:19:13" (1/3) ... [2022-10-17 10:19:15,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8bc636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:19:15, skipping insertion in model container [2022-10-17 10:19:15,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:14" (2/3) ... [2022-10-17 10:19:15,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8bc636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:19:15, skipping insertion in model container [2022-10-17 10:19:15,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:15" (3/3) ... [2022-10-17 10:19:15,221 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2022-10-17 10:19:15,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:19:15,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2022-10-17 10:19:15,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:19:15,379 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;@7e11d689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:19:15,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-10-17 10:19:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 65 states have (on average 2.123076923076923) internal successors, (138), 120 states have internal predecessors, (138), 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 10:19:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:19:15,393 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:15,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:19:15,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:15,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-10-17 10:19:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965004100] [2022-10-17 10:19:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:15,645 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 10:19:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:15,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965004100] [2022-10-17 10:19:15,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965004100] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:15,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:15,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:19:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168213906] [2022-10-17 10:19:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:15,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:19:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:19:15,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:19:15,707 INFO L87 Difference]: Start difference. First operand has 121 states, 65 states have (on average 2.123076923076923) internal successors, (138), 120 states have internal predecessors, (138), 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) 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 10:19:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:15,878 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2022-10-17 10:19:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:19:15,880 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 10:19:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:15,890 INFO L225 Difference]: With dead ends: 123 [2022-10-17 10:19:15,890 INFO L226 Difference]: Without dead ends: 119 [2022-10-17 10:19:15,892 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 10:19:15,896 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:15,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 73 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:19:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-10-17 10:19:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2022-10-17 10:19:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 114 states have internal predecessors, (122), 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 10:19:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2022-10-17 10:19:15,940 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 3 [2022-10-17 10:19:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:15,940 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2022-10-17 10:19:15,941 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 10:19:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2022-10-17 10:19:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:19:15,941 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:15,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:19:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:19:15,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-10-17 10:19:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:15,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052266472] [2022-10-17 10:19:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:16,093 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 10:19:16,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052266472] [2022-10-17 10:19:16,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052266472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:16,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:16,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:19:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482708358] [2022-10-17 10:19:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:16,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:19:16,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:19:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:19:16,097 INFO L87 Difference]: Start difference. First operand 115 states and 122 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 10:19:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:16,253 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2022-10-17 10:19:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:19:16,254 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 10:19:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:16,256 INFO L225 Difference]: With dead ends: 133 [2022-10-17 10:19:16,256 INFO L226 Difference]: Without dead ends: 133 [2022-10-17 10:19:16,256 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 10:19:16,258 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 98 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:16,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 78 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:19:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-17 10:19:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2022-10-17 10:19:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 73 states have (on average 1.7397260273972603) internal successors, (127), 119 states have internal predecessors, (127), 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 10:19:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2022-10-17 10:19:16,273 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 3 [2022-10-17 10:19:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:16,274 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2022-10-17 10:19:16,274 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 10:19:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2022-10-17 10:19:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:19:16,275 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:16,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:19:16,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2022-10-17 10:19:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:16,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302341898] [2022-10-17 10:19:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:16,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:16,533 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 10:19:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302341898] [2022-10-17 10:19:16,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302341898] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:16,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:16,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:19:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420514441] [2022-10-17 10:19:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:19:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:19:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:19:16,543 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 10:19:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:16,737 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2022-10-17 10:19:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:19:16,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 10:19:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:16,746 INFO L225 Difference]: With dead ends: 127 [2022-10-17 10:19:16,747 INFO L226 Difference]: Without dead ends: 127 [2022-10-17 10:19:16,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:19:16,751 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 161 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:16,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 61 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:19:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-10-17 10:19:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2022-10-17 10:19:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 76 states have (on average 1.605263157894737) internal successors, (122), 111 states have internal predecessors, (122), 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 10:19:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2022-10-17 10:19:16,776 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 8 [2022-10-17 10:19:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:16,777 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2022-10-17 10:19:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 10:19:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2022-10-17 10:19:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:19:16,779 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:16,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:16,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:19:16,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2022-10-17 10:19:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:16,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879027429] [2022-10-17 10:19:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:17,093 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 10:19:17,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879027429] [2022-10-17 10:19:17,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879027429] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:17,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:17,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087253873] [2022-10-17 10:19:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:17,098 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 10:19:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:17,424 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2022-10-17 10:19:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:19:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 10:19:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:17,426 INFO L225 Difference]: With dead ends: 151 [2022-10-17 10:19:17,426 INFO L226 Difference]: Without dead ends: 151 [2022-10-17 10:19:17,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:19:17,428 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 152 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:17,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 115 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:19:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-17 10:19:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2022-10-17 10:19:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 87 states have (on average 1.5402298850574712) internal successors, (134), 121 states have internal predecessors, (134), 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 10:19:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2022-10-17 10:19:17,439 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 8 [2022-10-17 10:19:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:17,439 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2022-10-17 10:19:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 10:19:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2022-10-17 10:19:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:19:17,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:17,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:19:17,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1117785369, now seen corresponding path program 1 times [2022-10-17 10:19:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:17,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015994029] [2022-10-17 10:19:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:17,483 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 10:19:17,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:17,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015994029] [2022-10-17 10:19:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015994029] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:17,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:17,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:19:17,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503602071] [2022-10-17 10:19:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:17,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:19:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:19:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:19:17,486 INFO L87 Difference]: Start difference. First operand 122 states and 134 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 10:19:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:17,623 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2022-10-17 10:19:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:19:17,624 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 10:19:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:17,625 INFO L225 Difference]: With dead ends: 136 [2022-10-17 10:19:17,625 INFO L226 Difference]: Without dead ends: 136 [2022-10-17 10:19:17,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:19:17,627 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 121 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:17,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 130 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:19:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-10-17 10:19:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2022-10-17 10:19:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 119 states have internal predecessors, (130), 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 10:19:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2022-10-17 10:19:17,636 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 10 [2022-10-17 10:19:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2022-10-17 10:19:17,636 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 10:19:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2022-10-17 10:19:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:19:17,637 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:17,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:17,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:19:17,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2022-10-17 10:19:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135486798] [2022-10-17 10:19:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:17,784 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 10:19:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:17,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135486798] [2022-10-17 10:19:17,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135486798] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:17,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:17,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180620315] [2022-10-17 10:19:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:17,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:17,788 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:18,028 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2022-10-17 10:19:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:19:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 10:19:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:18,031 INFO L225 Difference]: With dead ends: 121 [2022-10-17 10:19:18,031 INFO L226 Difference]: Without dead ends: 121 [2022-10-17 10:19:18,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:19:18,038 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:18,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 240 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:19:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-10-17 10:19:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2022-10-17 10:19:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.5) internal successors, (129), 118 states have internal predecessors, (129), 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 10:19:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2022-10-17 10:19:18,045 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 12 [2022-10-17 10:19:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:18,046 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2022-10-17 10:19:18,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2022-10-17 10:19:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:19:18,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:18,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:19:18,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2022-10-17 10:19:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:18,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085899871] [2022-10-17 10:19:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:18,337 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 10:19:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:18,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085899871] [2022-10-17 10:19:18,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085899871] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:18,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:18,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361394416] [2022-10-17 10:19:18,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:18,341 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:18,583 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2022-10-17 10:19:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:19:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 10:19:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:18,585 INFO L225 Difference]: With dead ends: 121 [2022-10-17 10:19:18,585 INFO L226 Difference]: Without dead ends: 121 [2022-10-17 10:19:18,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:19:18,586 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 18 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:18,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 276 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:19:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-10-17 10:19:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2022-10-17 10:19:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 86 states have (on average 1.441860465116279) internal successors, (124), 113 states have internal predecessors, (124), 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 10:19:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2022-10-17 10:19:18,601 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 12 [2022-10-17 10:19:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:18,601 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2022-10-17 10:19:18,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2022-10-17 10:19:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:19:18,604 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:18,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:19:18,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1066467192, now seen corresponding path program 1 times [2022-10-17 10:19:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:18,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709082892] [2022-10-17 10:19:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:18,820 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 10:19:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:18,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709082892] [2022-10-17 10:19:18,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709082892] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:18,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:18,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:19:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989275949] [2022-10-17 10:19:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:18,823 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:19:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:19,013 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2022-10-17 10:19:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:19:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2022-10-17 10:19:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:19,015 INFO L225 Difference]: With dead ends: 177 [2022-10-17 10:19:19,016 INFO L226 Difference]: Without dead ends: 177 [2022-10-17 10:19:19,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:19:19,017 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 160 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:19,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 235 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:19:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-17 10:19:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 121. [2022-10-17 10:19:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 120 states have internal predecessors, (132), 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 10:19:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2022-10-17 10:19:19,023 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 13 [2022-10-17 10:19:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:19,023 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2022-10-17 10:19:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10:19:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2022-10-17 10:19:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:19:19,024 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:19,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:19,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:19:19,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1154665855, now seen corresponding path program 1 times [2022-10-17 10:19:19,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731213348] [2022-10-17 10:19:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:19,129 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 10:19:19,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:19:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731213348] [2022-10-17 10:19:19,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731213348] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:19,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:19,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870038510] [2022-10-17 10:19:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:19,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:19:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:19:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:19:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:19:19,132 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 10:19:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:19,251 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2022-10-17 10:19:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:19:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-10-17 10:19:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:19,253 INFO L225 Difference]: With dead ends: 127 [2022-10-17 10:19:19,253 INFO L226 Difference]: Without dead ends: 127 [2022-10-17 10:19:19,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:19,255 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 14 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:19,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 266 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:19:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-10-17 10:19:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2022-10-17 10:19:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 119 states have internal predecessors, (130), 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 10:19:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2022-10-17 10:19:19,260 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 19 [2022-10-17 10:19:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:19,261 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2022-10-17 10:19:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 10:19:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2022-10-17 10:19:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:19:19,262 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:19,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:19:19,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1154976737, now seen corresponding path program 1 times [2022-10-17 10:19:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:19:19,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433956854] [2022-10-17 10:19:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:19:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:19:19,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:19:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:19:19,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:19:19,331 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:19:19,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2022-10-17 10:19:19,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2022-10-17 10:19:19,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2022-10-17 10:19:19,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2022-10-17 10:19:19,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2022-10-17 10:19:19,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2022-10-17 10:19:19,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2022-10-17 10:19:19,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2022-10-17 10:19:19,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2022-10-17 10:19:19,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2022-10-17 10:19:19,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2022-10-17 10:19:19,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2022-10-17 10:19:19,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2022-10-17 10:19:19,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2022-10-17 10:19:19,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2022-10-17 10:19:19,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2022-10-17 10:19:19,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2022-10-17 10:19:19,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2022-10-17 10:19:19,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2022-10-17 10:19:19,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2022-10-17 10:19:19,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2022-10-17 10:19:19,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2022-10-17 10:19:19,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2022-10-17 10:19:19,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2022-10-17 10:19:19,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2022-10-17 10:19:19,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2022-10-17 10:19:19,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2022-10-17 10:19:19,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2022-10-17 10:19:19,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2022-10-17 10:19:19,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2022-10-17 10:19:19,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2022-10-17 10:19:19,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2022-10-17 10:19:19,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2022-10-17 10:19:19,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2022-10-17 10:19:19,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2022-10-17 10:19:19,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2022-10-17 10:19:19,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2022-10-17 10:19:19,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2022-10-17 10:19:19,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2022-10-17 10:19:19,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2022-10-17 10:19:19,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2022-10-17 10:19:19,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2022-10-17 10:19:19,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2022-10-17 10:19:19,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2022-10-17 10:19:19,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2022-10-17 10:19:19,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2022-10-17 10:19:19,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2022-10-17 10:19:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2022-10-17 10:19:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2022-10-17 10:19:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2022-10-17 10:19:19,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:19:19,358 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:19,362 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:19:19,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:19:19 BoogieIcfgContainer [2022-10-17 10:19:19,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:19:19,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:19:19,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:19:19,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:19:19,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:15" (3/4) ... [2022-10-17 10:19:19,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:19:19,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:19:19,394 INFO L158 Benchmark]: Toolchain (without parser) took 5649.40ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 52.2MB in the beginning and 87.9MB in the end (delta: -35.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:19:19,394 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:19:19,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.21ms. Allocated memory is still 92.3MB. Free memory was 52.0MB in the beginning and 60.5MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.59ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 58.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,395 INFO L158 Benchmark]: Boogie Preprocessor took 36.61ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 56.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,395 INFO L158 Benchmark]: RCFGBuilder took 875.48ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 35.6MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,396 INFO L158 Benchmark]: TraceAbstraction took 4176.10ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 34.9MB in the beginning and 88.9MB in the end (delta: -54.0MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,396 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 87.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:19:19,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.21ms. Allocated memory is still 92.3MB. Free memory was 52.0MB in the beginning and 60.5MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.59ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 58.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.61ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 56.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 875.48ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 35.6MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4176.10ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 34.9MB in the beginning and 88.9MB in the end (delta: -54.0MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 87.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 876 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 876 mSDsluCounter, 1474 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 848 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1369 IncrementalHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 626 mSDtfsCounter, 1369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 149 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:19:19,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/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_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/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_21e1538e-a797-43e8-b300-3f94341d3829/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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- 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 10:19:21,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:19:21,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:19:21,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:19:21,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:19:21,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:19:21,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:19:21,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:19:21,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:19:21,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:19:21,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:19:21,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:19:21,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:19:21,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:19:21,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:19:21,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:19:21,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:19:21,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:19:21,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:19:21,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:19:22,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:19:22,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:19:22,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:19:22,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:19:22,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:19:22,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:19:22,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:19:22,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:19:22,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:19:22,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:19:22,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:19:22,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:19:22,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:19:22,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:19:22,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:19:22,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:19:22,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:19:22,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:19:22,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:19:22,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:19:22,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:19:22,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:19:22,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:19:22,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:19:22,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:19:22,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:19:22,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:19:22,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:19:22,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:19:22,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:19:22,068 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:19:22,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:19:22,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:19:22,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:19:22,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:19:22,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:19:22,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:19:22,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:19:22,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:19:22,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:19:22,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:19:22,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:19:22,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:19:22,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:19:22,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:19:22,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:19:22,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:19:22,073 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:19:22,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:19:22,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:19:22,073 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_21e1538e-a797-43e8-b300-3f94341d3829/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2022-10-17 10:19:22,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:19:22,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:19:22,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:19:22,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:19:22,490 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:19:22,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2022-10-17 10:19:22,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/a62eed930/847ce880be8d4ec9b462a42f5382ed3e/FLAGa728d1582 [2022-10-17 10:19:23,219 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:19:23,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2022-10-17 10:19:23,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/a62eed930/847ce880be8d4ec9b462a42f5382ed3e/FLAGa728d1582 [2022-10-17 10:19:23,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/data/a62eed930/847ce880be8d4ec9b462a42f5382ed3e [2022-10-17 10:19:23,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:19:23,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:19:23,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:19:23,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:19:23,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:19:23,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:19:23" (1/1) ... [2022-10-17 10:19:23,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244524b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:23, skipping insertion in model container [2022-10-17 10:19:23,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:19:23" (1/1) ... [2022-10-17 10:19:23,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:19:23,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:19:24,003 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2022-10-17 10:19:24,007 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2022-10-17 10:19:24,013 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2022-10-17 10:19:24,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:19:24,045 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:19:24,110 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2022-10-17 10:19:24,113 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2022-10-17 10:19:24,117 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_21e1538e-a797-43e8-b300-3f94341d3829/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2022-10-17 10:19:24,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:19:24,166 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:19:24,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24 WrapperNode [2022-10-17 10:19:24,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:19:24,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:19:24,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:19:24,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:19:24,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,254 INFO L138 Inliner]: procedures = 122, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 120 [2022-10-17 10:19:24,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:19:24,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:19:24,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:19:24,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:19:24,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:19:24,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:19:24,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:19:24,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:19:24,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (1/1) ... [2022-10-17 10:19:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:19:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:19:24,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:19:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:19:24,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:19:24,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:19:24,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:19:24,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:19:24,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:19:24,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:19:24,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:19:24,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:19:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:19:24,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:19:24,681 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:19:24,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:19:25,438 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:19:25,446 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:19:25,447 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-17 10:19:25,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:25 BoogieIcfgContainer [2022-10-17 10:19:25,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:19:25,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:19:25,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:19:25,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:19:25,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:19:23" (1/3) ... [2022-10-17 10:19:25,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5908017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:19:25, skipping insertion in model container [2022-10-17 10:19:25,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:19:24" (2/3) ... [2022-10-17 10:19:25,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5908017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:19:25, skipping insertion in model container [2022-10-17 10:19:25,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:25" (3/3) ... [2022-10-17 10:19:25,459 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2022-10-17 10:19:25,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:19:25,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2022-10-17 10:19:25,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:19:25,545 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;@14b72466, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:19:25,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-10-17 10:19:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 63 states have (on average 2.1587301587301586) internal successors, (136), 118 states have internal predecessors, (136), 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 10:19:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:19:25,558 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:25,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:19:25,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-10-17 10:19:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:25,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762307005] [2022-10-17 10:19:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:25,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:25,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:25,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:25,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:19:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:25,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:19:25,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:25,756 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 10:19:25,774 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 10:19:25,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:25,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:25,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762307005] [2022-10-17 10:19:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762307005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:25,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:25,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:19:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612625225] [2022-10-17 10:19:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:25,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:19:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:19:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:19:25,834 INFO L87 Difference]: Start difference. First operand has 119 states, 63 states have (on average 2.1587301587301586) internal successors, (136), 118 states have internal predecessors, (136), 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) 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 10:19:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:26,196 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2022-10-17 10:19:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:19:26,199 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 10:19:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:26,217 INFO L225 Difference]: With dead ends: 121 [2022-10-17 10:19:26,217 INFO L226 Difference]: Without dead ends: 117 [2022-10-17 10:19:26,219 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 10:19:26,225 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:26,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 71 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:19:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-10-17 10:19:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2022-10-17 10:19:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.875) internal successors, (120), 112 states have internal predecessors, (120), 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 10:19:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2022-10-17 10:19:26,270 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 3 [2022-10-17 10:19:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:26,271 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2022-10-17 10:19:26,271 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 10:19:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2022-10-17 10:19:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:19:26,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:26,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:19:26,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:26,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:26,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-10-17 10:19:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:26,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296558723] [2022-10-17 10:19:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:26,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:26,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:19:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:26,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:19:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:26,567 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 10:19:26,582 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 10:19:26,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:26,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:26,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296558723] [2022-10-17 10:19:26,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296558723] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:26,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:26,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:19:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606934678] [2022-10-17 10:19:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:19:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:19:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:19:26,589 INFO L87 Difference]: Start difference. First operand 113 states and 120 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 10:19:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:26,963 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2022-10-17 10:19:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:19:26,965 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 10:19:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:26,967 INFO L225 Difference]: With dead ends: 131 [2022-10-17 10:19:26,967 INFO L226 Difference]: Without dead ends: 131 [2022-10-17 10:19:26,968 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 10:19:26,969 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 96 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 76 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:19:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-17 10:19:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2022-10-17 10:19:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 117 states have internal predecessors, (125), 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 10:19:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2022-10-17 10:19:26,999 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 3 [2022-10-17 10:19:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:27,000 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2022-10-17 10:19:27,000 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 10:19:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2022-10-17 10:19:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:19:27,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:27,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:27,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:27,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:27,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027173, now seen corresponding path program 1 times [2022-10-17 10:19:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:27,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836135513] [2022-10-17 10:19:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:27,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:27,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:27,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:19:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:27,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:19:27,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:27,360 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 10:19:27,432 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 10:19:27,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-10-17 10:19:27,462 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 10:19:27,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:27,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:27,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836135513] [2022-10-17 10:19:27,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836135513] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:27,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:27,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:19:27,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113790551] [2022-10-17 10:19:27,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:27,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:19:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:19:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:19:27,469 INFO L87 Difference]: Start difference. First operand 118 states and 125 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 10:19:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:27,971 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2022-10-17 10:19:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:19:27,971 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 10:19:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:27,973 INFO L225 Difference]: With dead ends: 125 [2022-10-17 10:19:27,973 INFO L226 Difference]: Without dead ends: 125 [2022-10-17 10:19:27,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 10:19:27,975 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 158 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:27,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 59 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:19:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-10-17 10:19:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 110. [2022-10-17 10:19:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.6216216216216217) internal successors, (120), 109 states have internal predecessors, (120), 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 10:19:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-10-17 10:19:27,987 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 7 [2022-10-17 10:19:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-10-17 10:19:27,988 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 10:19:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-10-17 10:19:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:19:27,989 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:27,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:28,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:28,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027174, now seen corresponding path program 1 times [2022-10-17 10:19:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:28,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926184875] [2022-10-17 10:19:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:28,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:28,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:28,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:19:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:19:28,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:28,311 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 10:19:28,423 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 10:19:28,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-10-17 10:19:28,450 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 10:19:28,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:28,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:28,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926184875] [2022-10-17 10:19:28,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926184875] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:28,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:28,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:19:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492402859] [2022-10-17 10:19:28,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:28,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:19:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:28,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:19:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:19:28,455 INFO L87 Difference]: Start difference. First operand 110 states and 120 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 10:19:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:29,063 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2022-10-17 10:19:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:19:29,064 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 10:19:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:29,066 INFO L225 Difference]: With dead ends: 148 [2022-10-17 10:19:29,066 INFO L226 Difference]: Without dead ends: 148 [2022-10-17 10:19:29,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 10:19:29,067 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 147 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:29,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 85 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:19:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-10-17 10:19:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2022-10-17 10:19:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 118 states have internal predecessors, (131), 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 10:19:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2022-10-17 10:19:29,081 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 7 [2022-10-17 10:19:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:29,081 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2022-10-17 10:19:29,082 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 10:19:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2022-10-17 10:19:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:19:29,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:29,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:29,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-10-17 10:19:29,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:29,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1837273936, now seen corresponding path program 1 times [2022-10-17 10:19:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26896896] [2022-10-17 10:19:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:29,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:29,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:29,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:19:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:29,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:19:29,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:29,398 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 10:19:29,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:29,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:29,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26896896] [2022-10-17 10:19:29,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26896896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:29,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:29,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:19:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817803586] [2022-10-17 10:19:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:29,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:19:29,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:19:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:19:29,402 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:19:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:29,746 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2022-10-17 10:19:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:19:29,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-10-17 10:19:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:29,748 INFO L225 Difference]: With dead ends: 133 [2022-10-17 10:19:29,748 INFO L226 Difference]: Without dead ends: 133 [2022-10-17 10:19:29,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 10:19:29,754 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 119 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:29,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 126 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:19:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-17 10:19:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2022-10-17 10:19:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 116 states have internal predecessors, (127), 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 10:19:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2022-10-17 10:19:29,771 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 9 [2022-10-17 10:19:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:29,772 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2022-10-17 10:19:29,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:19:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2022-10-17 10:19:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:19:29,773 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:29,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:29,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:29,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:29,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2022-10-17 10:19:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:29,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127916068] [2022-10-17 10:19:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:29,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:29,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:30,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:19:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:30,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:19:30,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:30,105 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 10:19:30,121 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 11 treesize of output 7 [2022-10-17 10:19:30,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 10:19:30,165 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 10:19:30,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:30,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:30,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127916068] [2022-10-17 10:19:30,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127916068] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:30,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:30,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401137077] [2022-10-17 10:19:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:30,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:30,169 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 10:19:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:30,890 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2022-10-17 10:19:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:19:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-10-17 10:19:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:30,892 INFO L225 Difference]: With dead ends: 118 [2022-10-17 10:19:30,892 INFO L226 Difference]: Without dead ends: 118 [2022-10-17 10:19:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:19:30,893 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 47 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:30,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 227 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:19:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-10-17 10:19:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2022-10-17 10:19:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 115 states have internal predecessors, (126), 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 10:19:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-10-17 10:19:30,911 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 11 [2022-10-17 10:19:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:30,911 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-10-17 10:19:30,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 10:19:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-10-17 10:19:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:19:30,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:30,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:30,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:31,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:31,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2022-10-17 10:19:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663080181] [2022-10-17 10:19:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:31,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:31,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:31,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:31,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:19:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:31,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:19:31,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:31,241 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 10:19:31,267 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 11 treesize of output 7 [2022-10-17 10:19:31,276 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 11 treesize of output 7 [2022-10-17 10:19:31,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-10-17 10:19:31,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:19:31,378 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 10:19:31,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:31,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:31,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663080181] [2022-10-17 10:19:31,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663080181] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:31,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:31,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871355894] [2022-10-17 10:19:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:19:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:19:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:19:31,382 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 10:19:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:32,141 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2022-10-17 10:19:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:19:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-10-17 10:19:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:32,142 INFO L225 Difference]: With dead ends: 117 [2022-10-17 10:19:32,143 INFO L226 Difference]: Without dead ends: 117 [2022-10-17 10:19:32,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:19:32,144 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 16 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:32,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 263 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:19:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-10-17 10:19:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2022-10-17 10:19:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 110 states have internal predecessors, (121), 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 10:19:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2022-10-17 10:19:32,153 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2022-10-17 10:19:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:32,153 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2022-10-17 10:19:32,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 10:19:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2022-10-17 10:19:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:19:32,155 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:32,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:32,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:32,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash -831409633, now seen corresponding path program 1 times [2022-10-17 10:19:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:32,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936752493] [2022-10-17 10:19:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:32,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:32,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:19:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:19:32,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:32,450 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 13 treesize of output 9 [2022-10-17 10:19:32,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-17 10:19:32,518 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 10:19:32,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:32,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:32,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936752493] [2022-10-17 10:19:32,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936752493] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:32,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:32,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299889565] [2022-10-17 10:19:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:32,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:19:32,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:19:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:19:32,522 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:33,036 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2022-10-17 10:19:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:19:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 10:19:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:33,039 INFO L225 Difference]: With dead ends: 173 [2022-10-17 10:19:33,039 INFO L226 Difference]: Without dead ends: 173 [2022-10-17 10:19:33,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:19:33,040 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 81 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:33,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 217 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:19:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-10-17 10:19:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 117. [2022-10-17 10:19:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 116 states have internal predecessors, (128), 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 10:19:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2022-10-17 10:19:33,048 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 12 [2022-10-17 10:19:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2022-10-17 10:19:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:19:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2022-10-17 10:19:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:19:33,050 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:33,051 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 10:19:33,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:33,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:33,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:33,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1081092570, now seen corresponding path program 1 times [2022-10-17 10:19:33,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307432361] [2022-10-17 10:19:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:33,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:33,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:19:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:19:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:19:33,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:19:33,388 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 13 treesize of output 9 [2022-10-17 10:19:33,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-17 10:19:33,496 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 10:19:33,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:19:33,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:19:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307432361] [2022-10-17 10:19:33,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307432361] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:19:33,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:19:33,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:19:33,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515621748] [2022-10-17 10:19:33,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:19:33,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:19:33,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:19:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:19:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:19:33,499 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 10:19:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:19:33,988 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2022-10-17 10:19:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:19:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 10:19:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:19:33,991 INFO L225 Difference]: With dead ends: 171 [2022-10-17 10:19:33,991 INFO L226 Difference]: Without dead ends: 171 [2022-10-17 10:19:33,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:19:33,992 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 72 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:19:33,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 219 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:19:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-10-17 10:19:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 121. [2022-10-17 10:19:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 120 states have internal predecessors, (132), 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 10:19:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2022-10-17 10:19:33,999 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 18 [2022-10-17 10:19:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:19:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2022-10-17 10:19:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 10:19:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2022-10-17 10:19:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:19:34,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:19:34,002 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 10:19:34,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:34,220 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-10-17 10:19:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:19:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1080781688, now seen corresponding path program 1 times [2022-10-17 10:19:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:19:34,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916544174] [2022-10-17 10:19:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:19:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:19:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:19:34,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:19:34,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:19:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:19:34,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:19:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:19:34,427 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-10-17 10:19:34,427 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:19:34,429 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2022-10-17 10:19:34,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2022-10-17 10:19:34,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2022-10-17 10:19:34,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2022-10-17 10:19:34,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2022-10-17 10:19:34,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2022-10-17 10:19:34,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2022-10-17 10:19:34,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2022-10-17 10:19:34,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2022-10-17 10:19:34,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2022-10-17 10:19:34,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2022-10-17 10:19:34,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2022-10-17 10:19:34,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2022-10-17 10:19:34,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2022-10-17 10:19:34,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2022-10-17 10:19:34,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2022-10-17 10:19:34,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2022-10-17 10:19:34,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2022-10-17 10:19:34,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2022-10-17 10:19:34,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2022-10-17 10:19:34,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2022-10-17 10:19:34,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2022-10-17 10:19:34,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2022-10-17 10:19:34,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2022-10-17 10:19:34,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2022-10-17 10:19:34,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2022-10-17 10:19:34,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2022-10-17 10:19:34,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2022-10-17 10:19:34,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2022-10-17 10:19:34,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2022-10-17 10:19:34,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2022-10-17 10:19:34,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2022-10-17 10:19:34,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2022-10-17 10:19:34,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2022-10-17 10:19:34,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2022-10-17 10:19:34,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:19:34,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:19:34,661 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:19:34,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:19:34,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:19:34 BoogieIcfgContainer [2022-10-17 10:19:34,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:19:34,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:19:34,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:19:34,699 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:19:34,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:19:25" (3/4) ... [2022-10-17 10:19:34,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:19:34,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:19:34,705 INFO L158 Benchmark]: Toolchain (without parser) took 11172.95ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 37.8MB in the beginning and 27.5MB in the end (delta: 10.3MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,706 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 57.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:19:34,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.79ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 34.7MB in the end (delta: 2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.78ms. Allocated memory is still 60.8MB. Free memory was 34.7MB in the beginning and 32.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,707 INFO L158 Benchmark]: Boogie Preprocessor took 76.42ms. Allocated memory is still 60.8MB. Free memory was 32.4MB in the beginning and 30.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,707 INFO L158 Benchmark]: RCFGBuilder took 1116.36ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 30.3MB in the beginning and 57.7MB in the end (delta: -27.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,715 INFO L158 Benchmark]: TraceAbstraction took 9245.80ms. Allocated memory is still 79.7MB. Free memory was 57.3MB in the beginning and 27.8MB in the end (delta: 29.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2022-10-17 10:19:34,717 INFO L158 Benchmark]: Witness Printer took 6.38ms. Allocated memory is still 79.7MB. Free memory was 27.8MB in the beginning and 27.5MB in the end (delta: 297.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:19:34,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 57.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.79ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 34.7MB in the end (delta: 2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.78ms. Allocated memory is still 60.8MB. Free memory was 34.7MB in the beginning and 32.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.42ms. Allocated memory is still 60.8MB. Free memory was 32.4MB in the beginning and 30.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1116.36ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 30.3MB in the beginning and 57.7MB in the end (delta: -27.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9245.80ms. Allocated memory is still 79.7MB. Free memory was 57.3MB in the beginning and 27.8MB in the end (delta: 29.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 6.38ms. Allocated memory is still 79.7MB. Free memory was 27.8MB in the beginning and 27.5MB in the end (delta: 297.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={6:0}] [L1008] list->colour = BLACK VAL [list={6:0}] [L1010] SLL* end = list; VAL [end={6:0}, list={6:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={6:0}, list={6:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={6:0}, list={6:0}] [L1039] EXPR end->colour VAL [end={6:0}, end->colour=1, list={6:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={6:0}, list={6:0}] [L1043] EXPR end->colour VAL [end={6:0}, end->colour=1, list={6:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={6:0}, end->next={0:0}, list={6:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={6:0}, list={6:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 837 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 837 mSDsluCounter, 1343 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 751 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1245 IncrementalHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 592 mSDtfsCounter, 1245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=9, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 191 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 26 NumberOfNonLiveVariables, 526 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:19:34,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e1538e-a797-43e8-b300-3f94341d3829/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample