./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95135695b4ab9cb9c416390540cae35b9fbb32e4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:28:50,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:28:50,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:28:51,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:28:51,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:28:51,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:28:51,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:28:51,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:28:51,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:28:51,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:28:51,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:28:51,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:28:51,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:28:51,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:28:51,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:28:51,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:28:51,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:28:51,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:28:51,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:28:51,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:28:51,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:28:51,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:28:51,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:28:51,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:28:51,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:28:51,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:28:51,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:28:51,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:28:51,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:28:51,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:28:51,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:28:51,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:28:51,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:28:51,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:28:51,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:28:51,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:28:51,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:28:51,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:28:51,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:28:51,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:28:51,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:28:51,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-15 19:28:51,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:28:51,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:28:51,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:28:51,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:28:51,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:28:51,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:28:51,106 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:28:51,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:28:51,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:28:51,107 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:28:51,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:28:51,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:28:51,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:28:51,108 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:28:51,108 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:28:51,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:28:51,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:28:51,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:28:51,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:28:51,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:28:51,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:28:51,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:28:51,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:28:51,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:28:51,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:28:51,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:28:51,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:28:51,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:28:51,111 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_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2021-10-15 19:28:51,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:28:51,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:28:51,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:28:51,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:28:51,538 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:28:51,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/forester-heap/sll-token-1.i [2021-10-15 19:28:51,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/data/44505b88c/5d7594dade9742239b50e1958c361d6f/FLAG339cf8e49 [2021-10-15 19:28:52,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:28:52,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i [2021-10-15 19:28:52,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/data/44505b88c/5d7594dade9742239b50e1958c361d6f/FLAG339cf8e49 [2021-10-15 19:28:52,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/data/44505b88c/5d7594dade9742239b50e1958c361d6f [2021-10-15 19:28:52,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:28:52,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:28:52,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:28:52,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:28:52,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:28:52,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:28:52" (1/1) ... [2021-10-15 19:28:52,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e943c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:52, skipping insertion in model container [2021-10-15 19:28:52,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:28:52" (1/1) ... [2021-10-15 19:28:52,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:28:52,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:28:53,173 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-10-15 19:28:53,180 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-10-15 19:28:53,181 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-10-15 19:28:53,183 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-10-15 19:28:53,184 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-10-15 19:28:53,188 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-10-15 19:28:53,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:28:53,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:28:53,244 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-10-15 19:28:53,247 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-10-15 19:28:53,248 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-10-15 19:28:53,249 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-10-15 19:28:53,251 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-10-15 19:28:53,253 WARN L228 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_547ed77e-004f-4347-9ce8-8cb88e915d97/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-10-15 19:28:53,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:28:53,290 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:28:53,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53 WrapperNode [2021-10-15 19:28:53,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:28:53,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:28:53,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:28:53,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:28:53,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:28:53,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:28:53,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:28:53,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:28:53,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (1/1) ... [2021-10-15 19:28:53,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:28:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:28:53,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:28:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:28:53,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 19:28:53,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:28:53,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-15 19:28:53,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 19:28:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-15 19:28:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-15 19:28:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-15 19:28:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-15 19:28:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-15 19:28:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-15 19:28:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-15 19:28:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-15 19:28:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-15 19:28:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-15 19:28:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-15 19:28:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-15 19:28:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-15 19:28:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-15 19:28:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-15 19:28:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-15 19:28:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-15 19:28:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-15 19:28:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-15 19:28:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-15 19:28:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-15 19:28:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-15 19:28:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-15 19:28:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-15 19:28:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-15 19:28:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-15 19:28:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-15 19:28:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-15 19:28:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:28:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 19:28:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:28:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:28:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:28:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:28:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:28:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:28:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 19:28:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:28:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:28:54,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:28:54,271 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:28:54,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:54 BoogieIcfgContainer [2021-10-15 19:28:54,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:28:54,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:28:54,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:28:54,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:28:54,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:28:52" (1/3) ... [2021-10-15 19:28:54,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aede64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:28:54, skipping insertion in model container [2021-10-15 19:28:54,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:53" (2/3) ... [2021-10-15 19:28:54,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aede64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:28:54, skipping insertion in model container [2021-10-15 19:28:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:54" (3/3) ... [2021-10-15 19:28:54,298 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-10-15 19:28:54,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:28:54,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-15 19:28:54,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:28:54,370 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:28:54,370 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-15 19:28:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 65 states have (on average 2.2) internal successors, (143), 119 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:28:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 19:28:54,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:54,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:54,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1985602549, now seen corresponding path program 1 times [2021-10-15 19:28:54,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:54,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677609518] [2021-10-15 19:28:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:54,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:54,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:54,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677609518] [2021-10-15 19:28:54,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677609518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:54,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:54,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:54,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5463509] [2021-10-15 19:28:54,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:54,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:54,855 INFO L87 Difference]: Start difference. First operand has 124 states, 65 states have (on average 2.2) internal successors, (143), 119 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:55,268 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2021-10-15 19:28:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-15 19:28:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:55,291 INFO L225 Difference]: With dead ends: 142 [2021-10-15 19:28:55,292 INFO L226 Difference]: Without dead ends: 139 [2021-10-15 19:28:55,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-15 19:28:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2021-10-15 19:28:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 64 states have (on average 1.84375) internal successors, (118), 115 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2021-10-15 19:28:55,378 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 7 [2021-10-15 19:28:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:55,379 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2021-10-15 19:28:55,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2021-10-15 19:28:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 19:28:55,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:55,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:55,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:28:55,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:55,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1985602550, now seen corresponding path program 1 times [2021-10-15 19:28:55,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:55,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370850349] [2021-10-15 19:28:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:55,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:55,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:55,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370850349] [2021-10-15 19:28:55,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370850349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:55,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:55,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:55,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119805488] [2021-10-15 19:28:55,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:55,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:55,525 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:55,812 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2021-10-15 19:28:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-15 19:28:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:55,818 INFO L225 Difference]: With dead ends: 145 [2021-10-15 19:28:55,819 INFO L226 Difference]: Without dead ends: 145 [2021-10-15 19:28:55,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-15 19:28:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117. [2021-10-15 19:28:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 64 states have (on average 1.8125) internal successors, (116), 113 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2021-10-15 19:28:55,845 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 7 [2021-10-15 19:28:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:55,846 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2021-10-15 19:28:55,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2021-10-15 19:28:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-15 19:28:55,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:55,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:55,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:28:55,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1770439166, now seen corresponding path program 1 times [2021-10-15 19:28:55,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:55,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184379843] [2021-10-15 19:28:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:55,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:56,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:56,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184379843] [2021-10-15 19:28:56,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184379843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:56,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:56,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:56,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092344354] [2021-10-15 19:28:56,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:56,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:56,045 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:56,331 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2021-10-15 19:28:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-15 19:28:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:56,340 INFO L225 Difference]: With dead ends: 123 [2021-10-15 19:28:56,340 INFO L226 Difference]: Without dead ends: 123 [2021-10-15 19:28:56,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-15 19:28:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2021-10-15 19:28:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.621212121212121) internal successors, (107), 102 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-10-15 19:28:56,364 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 12 [2021-10-15 19:28:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-10-15 19:28:56,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-10-15 19:28:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-15 19:28:56,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:56,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:56,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:28:56,367 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:56,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:56,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1770439165, now seen corresponding path program 1 times [2021-10-15 19:28:56,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:56,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146804158] [2021-10-15 19:28:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:56,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:56,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:56,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146804158] [2021-10-15 19:28:56,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146804158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:56,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:56,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:56,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469707515] [2021-10-15 19:28:56,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:56,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:56,561 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:56,925 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2021-10-15 19:28:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-15 19:28:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:56,928 INFO L225 Difference]: With dead ends: 188 [2021-10-15 19:28:56,928 INFO L226 Difference]: Without dead ends: 188 [2021-10-15 19:28:56,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-15 19:28:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 137. [2021-10-15 19:28:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 133 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2021-10-15 19:28:56,952 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 12 [2021-10-15 19:28:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:56,953 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2021-10-15 19:28:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2021-10-15 19:28:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 19:28:56,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:56,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:56,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:28:56,955 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:56,956 INFO L82 PathProgramCache]: Analyzing trace with hash 493695586, now seen corresponding path program 1 times [2021-10-15 19:28:56,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:56,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763330405] [2021-10-15 19:28:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:56,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:57,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:57,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763330405] [2021-10-15 19:28:57,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763330405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:57,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:57,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:57,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836264816] [2021-10-15 19:28:57,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:57,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:57,079 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:57,453 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-10-15 19:28:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:28:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-15 19:28:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:57,455 INFO L225 Difference]: With dead ends: 136 [2021-10-15 19:28:57,455 INFO L226 Difference]: Without dead ends: 136 [2021-10-15 19:28:57,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:28:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-15 19:28:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-15 19:28:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 132 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2021-10-15 19:28:57,464 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 16 [2021-10-15 19:28:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:57,465 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2021-10-15 19:28:57,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2021-10-15 19:28:57,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 19:28:57,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:57,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:57,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:28:57,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:57,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:57,467 INFO L82 PathProgramCache]: Analyzing trace with hash 493695587, now seen corresponding path program 1 times [2021-10-15 19:28:57,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:57,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378854463] [2021-10-15 19:28:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:57,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:57,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:57,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378854463] [2021-10-15 19:28:57,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378854463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:57,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:57,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:57,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566253157] [2021-10-15 19:28:57,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:57,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:57,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:57,676 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:58,126 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-10-15 19:28:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:28:58,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-15 19:28:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:58,130 INFO L225 Difference]: With dead ends: 135 [2021-10-15 19:28:58,130 INFO L226 Difference]: Without dead ends: 135 [2021-10-15 19:28:58,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 151.8ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:28:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-15 19:28:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 120. [2021-10-15 19:28:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 87 states have (on average 1.4597701149425288) internal successors, (127), 116 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2021-10-15 19:28:58,135 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 16 [2021-10-15 19:28:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:58,136 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2021-10-15 19:28:58,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2021-10-15 19:28:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:28:58,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:58,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:58,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:28:58,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:58,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:58,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1591324516, now seen corresponding path program 1 times [2021-10-15 19:28:58,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:58,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361863189] [2021-10-15 19:28:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:58,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:58,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361863189] [2021-10-15 19:28:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361863189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:58,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:58,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:58,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694354974] [2021-10-15 19:28:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:58,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:58,255 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:58,490 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2021-10-15 19:28:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-15 19:28:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:58,493 INFO L225 Difference]: With dead ends: 119 [2021-10-15 19:28:58,493 INFO L226 Difference]: Without dead ends: 119 [2021-10-15 19:28:58,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:28:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-15 19:28:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-15 19:28:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 115 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2021-10-15 19:28:58,499 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 17 [2021-10-15 19:28:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:58,500 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2021-10-15 19:28:58,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2021-10-15 19:28:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:28:58,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:58,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:58,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:28:58,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1591324517, now seen corresponding path program 1 times [2021-10-15 19:28:58,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:58,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904974798] [2021-10-15 19:28:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:58,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:58,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:58,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904974798] [2021-10-15 19:28:58,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904974798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:58,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:58,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:58,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864126013] [2021-10-15 19:28:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:58,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:58,642 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:58,886 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2021-10-15 19:28:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-15 19:28:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:58,888 INFO L225 Difference]: With dead ends: 118 [2021-10-15 19:28:58,888 INFO L226 Difference]: Without dead ends: 118 [2021-10-15 19:28:58,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:28:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-15 19:28:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-15 19:28:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-15 19:28:58,894 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 17 [2021-10-15 19:28:58,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:58,895 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-15 19:28:58,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-15 19:28:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-15 19:28:58,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:58,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:58,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:28:58,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr10ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1995056002, now seen corresponding path program 1 times [2021-10-15 19:28:58,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:58,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371548341] [2021-10-15 19:28:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:58,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:59,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:59,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371548341] [2021-10-15 19:28:59,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371548341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:59,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:59,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:59,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101013536] [2021-10-15 19:28:59,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:59,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:59,023 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:59,325 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-10-15 19:28:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:28:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-15 19:28:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:59,327 INFO L225 Difference]: With dead ends: 129 [2021-10-15 19:28:59,327 INFO L226 Difference]: Without dead ends: 129 [2021-10-15 19:28:59,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:28:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-15 19:28:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2021-10-15 19:28:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.430232558139535) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-15 19:28:59,333 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 18 [2021-10-15 19:28:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:59,333 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-15 19:28:59,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-15 19:28:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-15 19:28:59,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:59,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:59,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:28:59,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr19ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash -700314201, now seen corresponding path program 1 times [2021-10-15 19:28:59,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:59,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959436500] [2021-10-15 19:28:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:59,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:28:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:59,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:59,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959436500] [2021-10-15 19:28:59,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959436500] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:59,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:59,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:59,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188105314] [2021-10-15 19:28:59,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:59,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:59,423 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:28:59,628 INFO L93 Difference]: Finished difference Result 172 states and 177 transitions. [2021-10-15 19:28:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-15 19:28:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:28:59,630 INFO L225 Difference]: With dead ends: 172 [2021-10-15 19:28:59,630 INFO L226 Difference]: Without dead ends: 172 [2021-10-15 19:28:59,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-15 19:28:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 114. [2021-10-15 19:28:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 85 states have (on average 1.423529411764706) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-15 19:28:59,636 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 20 [2021-10-15 19:28:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:28:59,636 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-15 19:28:59,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:28:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-15 19:28:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-15 19:28:59,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:28:59,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:59,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:28:59,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr29ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 49 more)] === [2021-10-15 19:28:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:59,639 INFO L82 PathProgramCache]: Analyzing trace with hash -202609001, now seen corresponding path program 1 times [2021-10-15 19:28:59,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:59,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288934096] [2021-10-15 19:28:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:59,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:28:59,666 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:28:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:28:59,733 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:28:59,733 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:28:59,734 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-15 19:28:59,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-15 19:28:59,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-15 19:28:59,738 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-15 19:28:59,738 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,738 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-15 19:28:59,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-15 19:28:59,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-15 19:28:59,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-15 19:28:59,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-15 19:28:59,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-15 19:28:59,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-15 19:28:59,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-15 19:28:59,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-15 19:28:59,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-15 19:28:59,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-15 19:28:59,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-15 19:28:59,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,747 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-15 19:28:59,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-15 19:28:59,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-15 19:28:59,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-15 19:28:59,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-15 19:28:59,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-15 19:28:59,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-15 19:28:59,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-15 19:28:59,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-15 19:28:59,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-15 19:28:59,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-15 19:28:59,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-15 19:28:59,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-15 19:28:59,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-15 19:28:59,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-15 19:28:59,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-15 19:28:59,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:28:59,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 19:28:59,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:28:59,765 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:28:59,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:28:59 BoogieIcfgContainer [2021-10-15 19:28:59,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:28:59,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:28:59,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:28:59,799 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:28:59,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:54" (3/4) ... [2021-10-15 19:28:59,808 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:28:59,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:28:59,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:28:59,852 INFO L168 Benchmark]: Toolchain (without parser) took 7198.88 ms. Allocated memory was 132.1 MB in the beginning and 184.5 MB in the end (delta: 52.4 MB). Free memory was 95.7 MB in the beginning and 86.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,853 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 132.1 MB. Free memory was 103.9 MB in the beginning and 103.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:28:59,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.71 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 100.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,854 INFO L168 Benchmark]: Boogie Preprocessor took 100.10 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 97.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,855 INFO L168 Benchmark]: RCFGBuilder took 880.82 ms. Allocated memory is still 132.1 MB. Free memory was 97.9 MB in the beginning and 73.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,855 INFO L168 Benchmark]: TraceAbstraction took 5516.36 ms. Allocated memory was 132.1 MB in the beginning and 184.5 MB in the end (delta: 52.4 MB). Free memory was 72.7 MB in the beginning and 88.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,856 INFO L168 Benchmark]: Witness Printer took 51.80 ms. Allocated memory is still 184.5 MB. Free memory was 88.5 MB in the beginning and 86.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:59,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 132.1 MB. Free memory was 103.9 MB in the beginning and 103.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.71 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 100.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.10 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 97.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 880.82 ms. Allocated memory is still 132.1 MB. Free memory was 97.9 MB in the beginning and 73.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5516.36 ms. Allocated memory was 132.1 MB in the beginning and 184.5 MB in the end (delta: 52.4 MB). Free memory was 72.7 MB in the beginning and 88.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.80 ms. Allocated memory is still 184.5 MB. Free memory was 88.5 MB in the beginning and 86.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1031]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) VAL [head={-1:0}] [L1005] head->data = 0 VAL [head={-1:0}] [L1007] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 VAL [head={-1:0}, x={-1:0}] [L1019] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1020] EXPR x->next VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1020] x->next->data = 2 VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1022] x = head VAL [head={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: 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 4 procedures, 127 locations, 54 error locations. Started 1 CEGAR loops. OverallTime: 5401.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 25.4ms, AutomataDifference: 3286.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 772 SDtfs, 822 SDslu, 1248 SDs, 0 SdLazy, 2292 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2098.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 623.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=4, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 170.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 202 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.3ms SsaConstructionTime, 293.4ms SatisfiabilityAnalysisTime, 1112.3ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 proved your program to be incorrect! [2021-10-15 19:28:59,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547ed77e-004f-4347-9ce8-8cb88e915d97/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...