./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD --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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 22:59:11,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:59:11,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:59:11,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:59:11,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:59:11,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:59:11,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:59:11,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:59:11,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:59:11,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:59:11,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:59:11,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:59:11,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:59:11,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:59:11,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:59:11,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:59:11,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:59:11,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:59:11,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:59:11,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:59:11,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:59:11,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:59:11,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:59:11,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:59:11,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:59:11,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:59:11,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:59:11,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:59:11,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:59:11,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:59:11,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:59:11,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:59:11,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:59:11,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:59:11,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:59:11,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:59:11,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:59:11,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:59:11,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:59:11,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:59:11,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:59:11,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 22:59:12,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:59:12,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:59:12,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:59:12,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:59:12,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:59:12,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:59:12,023 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:59:12,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:59:12,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:59:12,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:59:12,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:59:12,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:59:12,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:59:12,026 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:59:12,027 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:59:12,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:59:12,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:59:12,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:59:12,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:59:12,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:59:12,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:59:12,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:59:12,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:59:12,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:59:12,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:59:12,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:59:12,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:59:12,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:59:12,041 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_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2021-10-28 22:59:12,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:59:12,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:59:12,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:59:12,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:59:12,449 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:59:12,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2021-10-28 22:59:12,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/data/bcef12400/bd5cce016bd643c78fada5a2b4b6afc2/FLAGa52ee046c [2021-10-28 22:59:13,217 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:59:13,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/sv-benchmarks/c/list-properties/alternating_list-2.i [2021-10-28 22:59:13,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/data/bcef12400/bd5cce016bd643c78fada5a2b4b6afc2/FLAGa52ee046c [2021-10-28 22:59:13,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/data/bcef12400/bd5cce016bd643c78fada5a2b4b6afc2 [2021-10-28 22:59:13,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:59:13,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:59:13,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:59:13,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:59:13,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:59:13,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:59:13" (1/1) ... [2021-10-28 22:59:13,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713ade47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:13, skipping insertion in model container [2021-10-28 22:59:13,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:59:13" (1/1) ... [2021-10-28 22:59:13,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:59:13,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:59:13,861 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_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-10-28 22:59:13,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:59:13,875 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:59:13,944 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_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-10-28 22:59:13,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:59:14,016 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:59:14,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14 WrapperNode [2021-10-28 22:59:14,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:59:14,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:59:14,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:59:14,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:59:14,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:59:14,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:59:14,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:59:14,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:59:14,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (1/1) ... [2021-10-28 22:59:14,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:59:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:59:14,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:59:14,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:59:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:59:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:59:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 22:59:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:59:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:59:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 22:59:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 22:59:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 22:59:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 22:59:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:59:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:59:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 22:59:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:59:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:59:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:59:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 22:59:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 22:59:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 22:59:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:59:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:59:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:59:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:59:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:59:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:59:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:59:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:59:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:59:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:59:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:59:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:59:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:59:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:59:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:59:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:59:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:59:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:59:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:59:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:59:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:59:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:59:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:59:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:59:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:59:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:59:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:59:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:59:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:59:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:59:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:59:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:59:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:59:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:59:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:59:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:59:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:59:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:59:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:59:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:59:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:59:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:59:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:59:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:59:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:59:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:59:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:59:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:59:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:59:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 22:59:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:59:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:59:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:59:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:59:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:59:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:59:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:59:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:59:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:59:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:59:14,736 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 22:59:15,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:59:15,066 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 22:59:15,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:59:15 BoogieIcfgContainer [2021-10-28 22:59:15,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:59:15,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:59:15,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:59:15,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:59:15,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:59:13" (1/3) ... [2021-10-28 22:59:15,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41336c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:59:15, skipping insertion in model container [2021-10-28 22:59:15,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:59:14" (2/3) ... [2021-10-28 22:59:15,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41336c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:59:15, skipping insertion in model container [2021-10-28 22:59:15,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:59:15" (3/3) ... [2021-10-28 22:59:15,080 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2021-10-28 22:59:15,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:59:15,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-28 22:59:15,142 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:59:15,149 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:59:15,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-28 22:59:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:59:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:59:15,229 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:15,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:15,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1080134069, now seen corresponding path program 1 times [2021-10-28 22:59:15,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:15,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212055376] [2021-10-28 22:59:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:15,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:15,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:15,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212055376] [2021-10-28 22:59:15,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212055376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:15,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:15,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:59:15,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294360603] [2021-10-28 22:59:15,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:59:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:59:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:59:15,583 INFO L87 Difference]: Start difference. First operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 22:59:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:15,772 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-10-28 22:59:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:59:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-10-28 22:59:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:15,784 INFO L225 Difference]: With dead ends: 81 [2021-10-28 22:59:15,784 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 22:59:15,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:59:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 22:59:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 22:59:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.853658536585366) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-10-28 22:59:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-28 22:59:15,829 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 10 [2021-10-28 22:59:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:15,829 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-28 22:59:15,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 22:59:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-28 22:59:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:59:15,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:15,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:15,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:59:15,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -875617869, now seen corresponding path program 1 times [2021-10-28 22:59:15,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:15,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625579587] [2021-10-28 22:59:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:15,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:15,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:15,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625579587] [2021-10-28 22:59:15,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625579587] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:15,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:15,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:59:15,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641753800] [2021-10-28 22:59:15,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:59:15,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:59:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:59:15,995 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 22:59:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:16,271 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-10-28 22:59:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:59:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-28 22:59:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:16,277 INFO L225 Difference]: With dead ends: 95 [2021-10-28 22:59:16,277 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:59:16,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:59:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:59:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2021-10-28 22:59:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 71 states have internal predecessors, (84), 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) [2021-10-28 22:59:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-10-28 22:59:16,305 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 11 [2021-10-28 22:59:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:16,306 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-10-28 22:59:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 22:59:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-10-28 22:59:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:59:16,307 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:16,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:16,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:59:16,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -875617868, now seen corresponding path program 1 times [2021-10-28 22:59:16,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:16,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393221132] [2021-10-28 22:59:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:16,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:16,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:16,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393221132] [2021-10-28 22:59:16,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393221132] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:16,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:16,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:59:16,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111368587] [2021-10-28 22:59:16,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:59:16,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:59:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:59:16,549 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 22:59:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:16,836 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-28 22:59:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:59:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-28 22:59:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:16,840 INFO L225 Difference]: With dead ends: 103 [2021-10-28 22:59:16,840 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 22:59:16,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:59:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 22:59:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-10-28 22:59:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 87 states have internal predecessors, (100), 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) [2021-10-28 22:59:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2021-10-28 22:59:16,854 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 11 [2021-10-28 22:59:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:16,854 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2021-10-28 22:59:16,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 22:59:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2021-10-28 22:59:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:59:16,856 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:16,856 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:16,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:59:16,857 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash 888231595, now seen corresponding path program 1 times [2021-10-28 22:59:16,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:16,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300545746] [2021-10-28 22:59:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:16,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:16,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:16,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300545746] [2021-10-28 22:59:17,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300545746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:17,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:17,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:59:17,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190195638] [2021-10-28 22:59:17,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:59:17,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:59:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:59:17,006 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-10-28 22:59:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:17,176 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-10-28 22:59:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:59:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 [2021-10-28 22:59:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:17,178 INFO L225 Difference]: With dead ends: 140 [2021-10-28 22:59:17,178 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 22:59:17,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:59:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 22:59:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-10-28 22:59:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.527027027027027) internal successors, (113), 96 states have internal predecessors, (113), 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) [2021-10-28 22:59:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-10-28 22:59:17,189 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 18 [2021-10-28 22:59:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:17,190 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-10-28 22:59:17,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-10-28 22:59:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-10-28 22:59:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:59:17,191 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:17,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:17,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:59:17,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 887923765, now seen corresponding path program 1 times [2021-10-28 22:59:17,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:17,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447746070] [2021-10-28 22:59:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:17,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:17,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:17,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447746070] [2021-10-28 22:59:17,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447746070] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:17,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:17,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:59:17,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962495398] [2021-10-28 22:59:17,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:59:17,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:59:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:59:17,301 INFO L87 Difference]: Start difference. First operand 100 states and 116 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) [2021-10-28 22:59:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:17,568 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-28 22:59:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:59:17,569 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 [2021-10-28 22:59:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:17,570 INFO L225 Difference]: With dead ends: 145 [2021-10-28 22:59:17,571 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 22:59:17,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:59:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 22:59:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 103. [2021-10-28 22:59:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 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) [2021-10-28 22:59:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-10-28 22:59:17,579 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 18 [2021-10-28 22:59:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:17,590 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-10-28 22:59:17,590 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) [2021-10-28 22:59:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-10-28 22:59:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:59:17,591 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:17,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:17,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:59:17,591 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1724463005, now seen corresponding path program 1 times [2021-10-28 22:59:17,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:17,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611862978] [2021-10-28 22:59:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:17,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:17,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:17,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611862978] [2021-10-28 22:59:17,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611862978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:17,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:17,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:59:17,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751844976] [2021-10-28 22:59:17,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:59:17,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:59:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:59:17,676 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-28 22:59:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:17,842 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-10-28 22:59:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:59:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2021-10-28 22:59:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:17,847 INFO L225 Difference]: With dead ends: 110 [2021-10-28 22:59:17,847 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 22:59:17,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:59:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 22:59:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-10-28 22:59:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5) internal successors, (117), 100 states have internal predecessors, (117), 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) [2021-10-28 22:59:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-10-28 22:59:17,857 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 19 [2021-10-28 22:59:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:17,857 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-10-28 22:59:17,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-28 22:59:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-10-28 22:59:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:59:17,858 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:17,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:17,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:59:17,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1918791492, now seen corresponding path program 1 times [2021-10-28 22:59:17,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:17,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685393563] [2021-10-28 22:59:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:17,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:17,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:17,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685393563] [2021-10-28 22:59:17,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685393563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:17,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:17,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:59:17,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851324773] [2021-10-28 22:59:17,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:59:17,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:59:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:59:17,946 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-28 22:59:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:18,147 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2021-10-28 22:59:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:59:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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 [2021-10-28 22:59:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:18,150 INFO L225 Difference]: With dead ends: 114 [2021-10-28 22:59:18,150 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 22:59:18,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:59:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 22:59:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-10-28 22:59:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.4875) internal successors, (119), 102 states have internal predecessors, (119), 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) [2021-10-28 22:59:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-10-28 22:59:18,182 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 20 [2021-10-28 22:59:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:18,183 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-10-28 22:59:18,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-28 22:59:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-10-28 22:59:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:59:18,184 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:18,185 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:18,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:59:18,185 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -647005726, now seen corresponding path program 1 times [2021-10-28 22:59:18,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:18,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705893071] [2021-10-28 22:59:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:18,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:18,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705893071] [2021-10-28 22:59:18,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705893071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:18,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:18,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 22:59:18,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779609293] [2021-10-28 22:59:18,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:59:18,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:59:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:59:18,325 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 22:59:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:18,617 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2021-10-28 22:59:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:59:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 21 [2021-10-28 22:59:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:18,619 INFO L225 Difference]: With dead ends: 121 [2021-10-28 22:59:18,619 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 22:59:18,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:59:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 22:59:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2021-10-28 22:59:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 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) [2021-10-28 22:59:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-10-28 22:59:18,625 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 21 [2021-10-28 22:59:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:18,625 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-10-28 22:59:18,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 22:59:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-10-28 22:59:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:59:18,627 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:18,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:18,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:59:18,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash -648422782, now seen corresponding path program 1 times [2021-10-28 22:59:18,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:18,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592949725] [2021-10-28 22:59:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:18,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:18,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:18,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592949725] [2021-10-28 22:59:18,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592949725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:18,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:18,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:59:18,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027387282] [2021-10-28 22:59:18,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:59:18,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:59:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:59:18,748 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 22:59:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:18,881 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-10-28 22:59:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:59:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21 [2021-10-28 22:59:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:18,884 INFO L225 Difference]: With dead ends: 116 [2021-10-28 22:59:18,884 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 22:59:18,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:59:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 22:59:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-10-28 22:59:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.481012658227848) internal successors, (117), 101 states have internal predecessors, (117), 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) [2021-10-28 22:59:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-10-28 22:59:18,890 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 21 [2021-10-28 22:59:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:18,891 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-10-28 22:59:18,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 22:59:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-10-28 22:59:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:59:18,892 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:18,892 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:18,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:59:18,893 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052608, now seen corresponding path program 1 times [2021-10-28 22:59:18,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:18,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405085557] [2021-10-28 22:59:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:18,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:18,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:18,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405085557] [2021-10-28 22:59:18,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405085557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:18,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:18,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:59:18,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728162899] [2021-10-28 22:59:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:59:18,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:59:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:59:18,979 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 22:59:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:19,216 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-10-28 22:59:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:59:19,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-10-28 22:59:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:19,218 INFO L225 Difference]: With dead ends: 107 [2021-10-28 22:59:19,218 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 22:59:19,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:59:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 22:59:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-10-28 22:59:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 98 states have internal predecessors, (114), 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) [2021-10-28 22:59:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-28 22:59:19,222 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 21 [2021-10-28 22:59:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-28 22:59:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 22:59:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-28 22:59:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:59:19,224 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:19,224 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:19,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:59:19,224 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052609, now seen corresponding path program 1 times [2021-10-28 22:59:19,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:19,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916591109] [2021-10-28 22:59:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:19,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 22:59:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:19,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:19,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916591109] [2021-10-28 22:59:19,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916591109] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:59:19,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:19,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:59:19,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047329874] [2021-10-28 22:59:19,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:59:19,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:59:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:59:19,359 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 22:59:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:19,632 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-10-28 22:59:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:59:19,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-10-28 22:59:19,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:19,633 INFO L225 Difference]: With dead ends: 98 [2021-10-28 22:59:19,634 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 22:59:19,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:59:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 22:59:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-28 22:59:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 86 states have internal predecessors, (100), 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) [2021-10-28 22:59:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-10-28 22:59:19,636 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 21 [2021-10-28 22:59:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:19,637 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 22:59:19,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 22:59:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-10-28 22:59:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:59:19,638 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:19,638 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:19,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:59:19,638 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 22:59:19,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:19,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1153932792, now seen corresponding path program 1 times [2021-10-28 22:59:19,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:19,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013703220] [2021-10-28 22:59:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:19,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:59:19,658 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:59:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:59:19,703 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:59:19,704 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:59:19,705 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 22:59:19,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 22:59:19,707 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 22:59:19,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 22:59:19,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 22:59:19,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 22:59:19,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 22:59:19,708 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 22:59:19,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 22:59:19,710 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 22:59:19,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 22:59:19,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 22:59:19,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 22:59:19,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:59:19,712 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:59:19,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:59:19,716 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:19,721 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:59:19,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:59:19 BoogieIcfgContainer [2021-10-28 22:59:19,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:59:19,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:59:19,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:59:19,752 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:59:19,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:59:15" (3/4) ... [2021-10-28 22:59:19,754 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:59:19,817 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:59:19,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:59:19,819 INFO L168 Benchmark]: Toolchain (without parser) took 6372.41 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 63.2 MB in the beginning and 100.4 MB in the end (delta: -37.2 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,819 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:59:19,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.74 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 69.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,820 INFO L168 Benchmark]: Boogie Preprocessor took 77.37 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 66.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,821 INFO L168 Benchmark]: RCFGBuilder took 972.02 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 43.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,822 INFO L168 Benchmark]: TraceAbstraction took 4680.26 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 43.5 MB in the beginning and 36.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,822 INFO L168 Benchmark]: Witness Printer took 66.10 ms. Allocated memory is still 127.9 MB. Free memory was 36.6 MB in the beginning and 100.4 MB in the end (delta: -63.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:19,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 556.74 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 69.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.37 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 66.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 972.02 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 43.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4680.26 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 43.5 MB in the beginning and 36.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.10 ms. Allocated memory is still 127.9 MB. Free memory was 36.6 MB in the beginning and 100.4 MB in the end (delta: -63.8 MB). Peak memory consumption was 2.3 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 573]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, p={-1:0}] [L539] p->h = 2 VAL [a={-1:0}, flag=1, p={-1:0}] [L540] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}] [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L547] p->n = t VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L548] EXPR p->n VAL [a={-1:0}, flag=0, p={-1:0}, p->n={-2:0}, t={-2:0}] [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, flag=0, p={-2:0}, t={-2:0}] [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}, t={-2:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}, p->h=2, t={-2:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=2, t={-2:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: 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 10 procedures, 100 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 840 SDslu, 952 SDs, 0 SdLazy, 1694 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 153 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 4/4 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! [2021-10-28 22:59:19,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c23ddbf-8eca-48a2-8066-08bb2761d4ae/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...