./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_flag-1.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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/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 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:15:02,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:15:02,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:15:02,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:15:02,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:15:02,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:15:02,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:15:02,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:15:02,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:15:02,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:15:02,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:15:02,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:15:02,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:15:02,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:15:02,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:15:02,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:15:02,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:15:02,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:15:02,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:15:02,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:15:02,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:15:02,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:15:02,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:15:02,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:15:03,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:15:03,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:15:03,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:15:03,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:15:03,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:15:03,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:15:03,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:15:03,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:15:03,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:15:03,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:15:03,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:15:03,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:15:03,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:15:03,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:15:03,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:15:03,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:15:03,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:15:03,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 23:15:03,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:15:03,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:15:03,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:15:03,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:15:03,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:15:03,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:15:03,062 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:15:03,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:15:03,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:15:03,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:15:03,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:15:03,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:15:03,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:15:03,065 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:15:03,065 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:15:03,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:15:03,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:15:03,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:15:03,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:15:03,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:15:03,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:15:03,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:15:03,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:15:03,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:15:03,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:15:03,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:15:03,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:15:03,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:15:03,070 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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b [2021-10-28 23:15:03,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:15:03,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:15:03,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:15:03,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:15:03,456 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:15:03,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list_flag-1.i [2021-10-28 23:15:03,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/data/e4a52694c/44ed39a2fc764339bea890bbbb00041a/FLAGfbe50044e [2021-10-28 23:15:04,160 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:15:04,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/sv-benchmarks/c/list-properties/list_flag-1.i [2021-10-28 23:15:04,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/data/e4a52694c/44ed39a2fc764339bea890bbbb00041a/FLAGfbe50044e [2021-10-28 23:15:04,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/data/e4a52694c/44ed39a2fc764339bea890bbbb00041a [2021-10-28 23:15:04,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:15:04,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:15:04,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:15:04,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:15:04,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:15:04,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:15:04" (1/1) ... [2021-10-28 23:15:04,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b9ca77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:04, skipping insertion in model container [2021-10-28 23:15:04,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:15:04" (1/1) ... [2021-10-28 23:15:04,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:15:04,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:15:05,031 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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2021-10-28 23:15:05,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:15:05,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:15:05,092 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_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2021-10-28 23:15:05,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:15:05,133 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:15:05,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05 WrapperNode [2021-10-28 23:15:05,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:15:05,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:15:05,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:15:05,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:15:05,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:15:05,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:15:05,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:15:05,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:15:05,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (1/1) ... [2021-10-28 23:15:05,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:15:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:15:05,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:15:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:15:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:15:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:15:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:15:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:15:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:15:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:15:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:15:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:15:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:15:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:15:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:15:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:15:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:15:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:15:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:15:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:15:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:15:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:15:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:15:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:15:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:15:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:15:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:15:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:15:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:15:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:15:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:15:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:15:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:15:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:15:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:15:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:15:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:15:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:15:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:15:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:15:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:15:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:15:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:15:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:15:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:15:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:15:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:15:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:15:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:15:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:15:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:15:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:15:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:15:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:15:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:15:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:15:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:15:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:15:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:15:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:15:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:15:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:15:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:15:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:15:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:15:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:15:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:15:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:15:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:15:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:15:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:15:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:15:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:15:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:15:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:15:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:15:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:15:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:15:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:15:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:15:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:15:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:15:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:15:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:15:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:15:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:15:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:15:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:15:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:15:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:15:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:15:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:15:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:15:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:15:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:15:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:15:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:15:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:15:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:15:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:15:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:15:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:15:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:15:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:15:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:15:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:15:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:15:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:15:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:15:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:15:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:15:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:15:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:15:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:15:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:15:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:15:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:15:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:15:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:15:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:15:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:15:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:15:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:15:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:15:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:15:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:15:05,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:15:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:15:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:15:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:15:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:15:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:15:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:15:05,726 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:15:06,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:15:06,027 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:15:06,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:15:06 BoogieIcfgContainer [2021-10-28 23:15:06,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:15:06,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:15:06,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:15:06,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:15:06,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:15:04" (1/3) ... [2021-10-28 23:15:06,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e302231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:15:06, skipping insertion in model container [2021-10-28 23:15:06,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:15:05" (2/3) ... [2021-10-28 23:15:06,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e302231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:15:06, skipping insertion in model container [2021-10-28 23:15:06,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:15:06" (3/3) ... [2021-10-28 23:15:06,046 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2021-10-28 23:15:06,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:15:06,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-28 23:15:06,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:15:06,135 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 23:15:06,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-28 23:15:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 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 23:15:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:15:06,168 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:15:06,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:15:06,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:15:06,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:15:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-28 23:15:06,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:15:06,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278124791] [2021-10-28 23:15:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:15:06,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:15:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:15:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:06,438 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 23:15:06,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:15:06,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278124791] [2021-10-28 23:15:06,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278124791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:15:06,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:15:06,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:15:06,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859910157] [2021-10-28 23:15:06,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:15:06,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:15:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:15:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:15:06,472 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 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 23:15:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:15:06,638 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-28 23:15:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:15:06,641 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 23:15:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:15:06,650 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:15:06,651 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 23:15:06,653 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 23:15:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 23:15:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-28 23:15:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 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 23:15:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-28 23:15:06,701 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-28 23:15:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:15:06,702 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 23:15:06,703 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 23:15:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-28 23:15:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:15:06,704 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:15:06,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:15:06,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:15:06,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:15:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:15:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-28 23:15:06,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:15:06,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973889925] [2021-10-28 23:15:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:15:06,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:15:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:15:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:06,832 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 23:15:06,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:15:06,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973889925] [2021-10-28 23:15:06,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973889925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:15:06,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:15:06,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:15:06,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779082737] [2021-10-28 23:15:06,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:15:06,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:15:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:15:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:15:06,837 INFO L87 Difference]: Start difference. First operand 55 states and 59 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 23:15:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:15:07,023 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-28 23:15:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:15:07,024 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 23:15:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:15:07,027 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:15:07,028 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:15:07,029 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 23:15:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:15:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-28 23:15:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 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 23:15:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-28 23:15:07,039 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-28 23:15:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:15:07,040 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-28 23:15:07,040 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 23:15:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-28 23:15:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:15:07,041 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:15:07,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:15:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:15:07,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:15:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:15:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-28 23:15:07,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:15:07,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101855776] [2021-10-28 23:15:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:15:07,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:15:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:15:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:07,221 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 23:15:07,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:15:07,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101855776] [2021-10-28 23:15:07,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101855776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:15:07,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:15:07,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:15:07,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673623515] [2021-10-28 23:15:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:15:07,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:15:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:15:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:15:07,237 INFO L87 Difference]: Start difference. First operand 58 states and 69 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 23:15:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:15:07,476 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-28 23:15:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:15:07,477 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 23:15:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:15:07,481 INFO L225 Difference]: With dead ends: 76 [2021-10-28 23:15:07,483 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 23:15:07,483 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 23:15:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 23:15:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-28 23:15:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 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 23:15:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-28 23:15:07,500 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-28 23:15:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:15:07,500 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-28 23:15:07,501 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 23:15:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-28 23:15:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:15:07,503 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:15:07,503 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 23:15:07,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:15:07,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:15:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:15:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-28 23:15:07,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:15:07,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675407894] [2021-10-28 23:15:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:15:07,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:15:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:15:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:15:07,686 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 23:15:07,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:15:07,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675407894] [2021-10-28 23:15:07,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675407894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:15:07,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:15:07,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:15:07,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908709684] [2021-10-28 23:15:07,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:15:07,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:15:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:15:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:15:07,690 INFO L87 Difference]: Start difference. First operand 67 states and 75 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 23:15:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:15:07,941 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-28 23:15:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:15:07,942 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 23:15:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:15:07,944 INFO L225 Difference]: With dead ends: 110 [2021-10-28 23:15:07,944 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:15:07,944 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 23:15:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:15:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-28 23:15:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 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 23:15:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-28 23:15:07,954 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-28 23:15:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:15:07,955 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-28 23:15:07,955 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 23:15:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-28 23:15:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:15:07,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:15:07,956 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 23:15:07,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:15:07,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-28 23:15:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:15:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-28 23:15:07,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:15:07,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658552703] [2021-10-28 23:15:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:15:07,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:15:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:15:07,982 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:15:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:15:08,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:15:08,033 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:15:08,035 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:15:08,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:15:08,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:15:08,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:15:08,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:15:08,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:15:08,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:15:08,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:15:08,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:15:08,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:15:08,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:15:08,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:15:08,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:15:08,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:15:08,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:15:08,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:15:08,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:15:08,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:15:08,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:15:08,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:15:08,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:15:08,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:15:08,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:15:08,048 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-28 23:15:08,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:15:08,063 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:15:08,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:15:08 BoogieIcfgContainer [2021-10-28 23:15:08,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:15:08,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:15:08,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:15:08,080 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:15:08,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:15:06" (3/4) ... [2021-10-28 23:15:08,083 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:15:08,088 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:15:08,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:15:08,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:15:08,132 INFO L168 Benchmark]: Toolchain (without parser) took 3642.14 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.9 MB in the beginning and 50.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,133 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:15:08,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.25 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 68.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,141 INFO L168 Benchmark]: Boogie Preprocessor took 72.93 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 66.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,142 INFO L168 Benchmark]: RCFGBuilder took 820.89 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.2 MB in the beginning and 96.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,142 INFO L168 Benchmark]: TraceAbstraction took 2041.41 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 51.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,145 INFO L168 Benchmark]: Witness Printer took 50.43 ms. Allocated memory is still 121.6 MB. Free memory was 51.9 MB in the beginning and 50.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:15:08,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.25 ms. Allocated memory is still 100.7 MB. Free memory was 67.6 MB in the beginning and 68.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.93 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 66.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 820.89 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.2 MB in the beginning and 96.0 MB in the end (delta: -29.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2041.41 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 51.9 MB in the end (delta: 43.6 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * Witness Printer took 50.43 ms. Allocated memory is still 121.6 MB. Free memory was 51.9 MB in the beginning and 50.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - 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: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: 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: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: 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: 557]: 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, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:15:08,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_160f6c1a-b18c-4bcf-babf-581ac70f0ad5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...