./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt --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 8d8f817036215afe0570c141fddfde907924f85b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 00:05:11,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:05:11,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:05:11,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:05:11,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:05:11,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:05:11,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:05:11,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:05:11,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:05:11,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:05:11,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:05:11,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:05:11,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:05:11,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:05:11,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:05:11,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:05:11,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:05:11,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:05:11,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:05:11,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:05:11,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:05:11,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:05:11,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:05:11,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:05:11,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:05:11,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:05:11,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:05:11,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:05:11,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:05:11,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:05:11,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:05:11,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:05:11,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:05:11,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:05:11,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:05:11,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:05:11,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:05:11,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:05:11,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:05:11,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:05:11,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:05:11,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-13 00:05:11,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:05:11,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:05:11,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:05:11,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:05:11,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:05:11,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:05:11,926 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:05:11,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:05:11,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:05:11,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:05:11,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:05:11,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:05:11,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:05:11,928 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:05:11,928 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:05:11,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:05:11,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:05:11,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:05:11,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:05:11,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:05:11,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:05:11,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:05:11,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:05:11,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:05:11,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:05:11,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:05:11,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:05:11,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:05:11,931 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_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8f817036215afe0570c141fddfde907924f85b [2021-10-13 00:05:12,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:05:12,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:05:12,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:05:12,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:05:12,223 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:05:12,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/list-properties/list_flag-1.i [2021-10-13 00:05:12,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/data/b21b6a5a9/a5ab729ebd8144eebf52ebf35e3c5a04/FLAGf076742a3 [2021-10-13 00:05:12,814 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:05:12,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/sv-benchmarks/c/list-properties/list_flag-1.i [2021-10-13 00:05:12,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/data/b21b6a5a9/a5ab729ebd8144eebf52ebf35e3c5a04/FLAGf076742a3 [2021-10-13 00:05:13,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/data/b21b6a5a9/a5ab729ebd8144eebf52ebf35e3c5a04 [2021-10-13 00:05:13,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:05:13,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:05:13,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:05:13,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:05:13,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:05:13,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81b09ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13, skipping insertion in model container [2021-10-13 00:05:13,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:05:13,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:05:13,511 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_397c5787-1836-4565-aeff-bddcf44621d1/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2021-10-13 00:05:13,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:05:13,522 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:05:13,562 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_397c5787-1836-4565-aeff-bddcf44621d1/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2021-10-13 00:05:13,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:05:13,593 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:05:13,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13 WrapperNode [2021-10-13 00:05:13,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:05:13,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:05:13,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:05:13,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:05:13,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:05:13,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:05:13,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:05:13,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:05:13,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (1/1) ... [2021-10-13 00:05:13,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:05:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:05:13,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:05:13,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:05:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:05:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:05:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:05:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:05:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:05:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:05:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:05:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:05:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-13 00:05:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:05:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:05:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:05:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:05:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:05:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:05:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:05:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:05:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:05:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:05:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:05:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:05:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:05:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:05:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:05:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:05:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:05:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:05:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:05:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:05:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:05:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:05:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:05:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:05:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:05:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:05:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:05:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:05:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:05:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:05:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:05:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:05:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:05:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:05:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:05:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:05:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:05:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:05:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:05:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:05:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:05:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:05:13,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:05:13,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:05:13,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:05:13,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:05:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:05:13,773 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:05:13,773 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:05:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:05:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:05:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:05:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:05:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:05:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:05:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:05:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:05:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:05:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:05:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:05:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:05:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:05:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:05:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:05:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:05:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:05:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:05:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:05:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:05:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:05:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:05:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-13 00:05:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:05:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:05:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:05:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:05:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:05:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:05:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:05:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:05:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:05:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:05:14,112 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-13 00:05:14,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:05:14,276 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-13 00:05:14,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:14 BoogieIcfgContainer [2021-10-13 00:05:14,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:05:14,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:05:14,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:05:14,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:05:14,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:05:13" (1/3) ... [2021-10-13 00:05:14,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42517fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:05:14, skipping insertion in model container [2021-10-13 00:05:14,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:05:13" (2/3) ... [2021-10-13 00:05:14,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42517fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:05:14, skipping insertion in model container [2021-10-13 00:05:14,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:14" (3/3) ... [2021-10-13 00:05:14,286 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2021-10-13 00:05:14,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:05:14,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-13 00:05:14,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:05:14,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:05:14,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 00:05:14,416 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) [2021-10-13 00:05:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:05:14,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:14,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:14,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:05:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-13 00:05:14,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:14,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971461582] [2021-10-13 00:05:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:14,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:05:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:14,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971461582] [2021-10-13 00:05:14,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971461582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:14,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:14,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:05:14,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385742519] [2021-10-13 00:05:14,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:05:14,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:05:14,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:14,757 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) [2021-10-13 00:05:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:14,884 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-13 00:05:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:05:14,886 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 [2021-10-13 00:05:14,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:14,892 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:05:14,892 INFO L226 Difference]: Without dead ends: 55 [2021-10-13 00:05:14,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:05:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-13 00:05:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-13 00:05:14,924 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) [2021-10-13 00:05:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-13 00:05:14,927 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-13 00:05:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:14,927 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-13 00:05:14,927 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) [2021-10-13 00:05:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-13 00:05:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:05:14,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:14,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:14,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:05:14,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:05:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-13 00:05:14,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:14,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16745238] [2021-10-13 00:05:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:14,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:05:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:15,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:15,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16745238] [2021-10-13 00:05:15,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16745238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:15,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:15,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:05:15,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524549072] [2021-10-13 00:05:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:05:15,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:05:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:15,067 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) [2021-10-13 00:05:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:15,237 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-13 00:05:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:05:15,238 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 [2021-10-13 00:05:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:15,242 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:05:15,242 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 00:05:15,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:05:15,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 00:05:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-13 00:05:15,254 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) [2021-10-13 00:05:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-13 00:05:15,258 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-13 00:05:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-13 00:05:15,258 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) [2021-10-13 00:05:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-13 00:05:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:05:15,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:15,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:15,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:05:15,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:05:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-13 00:05:15,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:15,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280106821] [2021-10-13 00:05:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:15,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:05:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:15,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:15,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280106821] [2021-10-13 00:05:15,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280106821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:15,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:15,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:05:15,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639250763] [2021-10-13 00:05:15,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:05:15,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:05:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:05:15,444 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) [2021-10-13 00:05:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:15,644 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-13 00:05:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:05:15,649 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 [2021-10-13 00:05:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:15,650 INFO L225 Difference]: With dead ends: 76 [2021-10-13 00:05:15,650 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 00:05:15,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:05:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 00:05:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-13 00:05:15,655 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) [2021-10-13 00:05:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-13 00:05:15,656 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-13 00:05:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:15,657 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-13 00:05:15,657 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) [2021-10-13 00:05:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-13 00:05:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:05:15,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:15,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:15,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:05:15,659 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:05:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-13 00:05:15,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:15,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888081072] [2021-10-13 00:05:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:15,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:05:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:05:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:05:15,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:05:15,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888081072] [2021-10-13 00:05:15,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888081072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:05:15,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:05:15,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:05:15,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399854250] [2021-10-13 00:05:15,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:05:15,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:05:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:05:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:05:15,828 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) [2021-10-13 00:05:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:05:16,012 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-13 00:05:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:05:16,013 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 [2021-10-13 00:05:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:05:16,014 INFO L225 Difference]: With dead ends: 110 [2021-10-13 00:05:16,014 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:05:16,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:05:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:05:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-13 00:05:16,021 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) [2021-10-13 00:05:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-13 00:05:16,023 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-13 00:05:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:05:16,023 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-13 00:05:16,023 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) [2021-10-13 00:05:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-13 00:05:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:05:16,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:05:16,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:05:16,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:05:16,025 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-13 00:05:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:05:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-13 00:05:16,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:05:16,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930741767] [2021-10-13 00:05:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:05:16,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:05:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:05:16,044 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:05:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:05:16,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:05:16,081 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:05:16,082 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:05:16,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:05:16,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:05:16,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:05:16,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:05:16,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:05:16,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:05:16,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 00:05:16,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 00:05:16,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 00:05:16,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 00:05:16,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 00:05:16,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 00:05:16,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-13 00:05:16,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-13 00:05:16,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-13 00:05:16,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-13 00:05:16,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-13 00:05:16,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-13 00:05:16,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-13 00:05:16,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-13 00:05:16,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:05:16,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:05:16,095 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:05:16,102 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:05:16,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:05:16 BoogieIcfgContainer [2021-10-13 00:05:16,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:05:16,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:05:16,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:05:16,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:05:16,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:05:14" (3/4) ... [2021-10-13 00:05:16,117 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:05:16,121 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:05:16,153 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:05:16,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:05:16,155 INFO L168 Benchmark]: Toolchain (without parser) took 3000.75 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 49.6 MB in the end (delta: 758.0 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,155 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.2 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:05:16,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.32 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 76.0 MB in the end (delta: -25.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,156 INFO L168 Benchmark]: Boogie Preprocessor took 57.85 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 73.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,157 INFO L168 Benchmark]: RCFGBuilder took 624.72 ms. Allocated memory is still 107.0 MB. Free memory was 73.2 MB in the beginning and 51.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,158 INFO L168 Benchmark]: TraceAbstraction took 1834.79 ms. Allocated memory is still 107.0 MB. Free memory was 51.5 MB in the beginning and 51.7 MB in the end (delta: -227.6 kB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,158 INFO L168 Benchmark]: Witness Printer took 38.58 ms. Allocated memory is still 107.0 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:05:16,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.2 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.32 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 76.0 MB in the end (delta: -25.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.85 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 73.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 624.72 ms. Allocated memory is still 107.0 MB. Free memory was 73.2 MB in the beginning and 51.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1834.79 ms. Allocated memory is still 107.0 MB. Free memory was 51.5 MB in the beginning and 51.7 MB in the end (delta: -227.6 kB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Witness Printer took 38.58 ms. Allocated memory is still 107.0 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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: 1744.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 27.4ms, AutomataDifference: 731.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 449.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.1ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.2ms SsaConstructionTime, 106.5ms SatisfiabilityAnalysisTime, 499.6ms 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! [2021-10-13 00:05:16,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_397c5787-1836-4565-aeff-bddcf44621d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...