./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:44:16,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:44:16,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:44:16,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:44:16,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:44:16,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:44:16,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:44:16,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:44:16,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:44:16,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:44:16,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:44:16,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:44:16,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:44:16,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:44:16,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:44:16,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:44:16,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:44:16,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:44:16,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:44:16,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:44:16,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:44:16,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:44:16,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:44:16,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:44:16,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:44:16,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:44:16,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:44:16,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:44:16,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:44:16,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:44:16,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:44:16,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:44:16,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:44:16,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:44:16,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:44:16,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:44:16,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:44:16,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:44:16,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:44:16,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:44:16,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:44:16,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:44:16,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:44:16,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:44:16,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:44:16,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:44:16,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:44:16,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:44:16,911 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:44:16,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:44:16,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:44:16,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:44:16,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:44:16,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:44:16,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:44:16,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:44:16,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:44:16,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:44:16,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:44:16,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:44:16,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:44:16,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:44:16,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:44:16,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:44:16,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:44:16,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:44:16,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:44:16,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:44:16,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:44:16,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:44:16,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:44:16,920 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_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 [2021-11-09 08:44:17,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:44:17,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:44:17,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:44:17,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:44:17,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:44:17,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-11-09 08:44:17,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/data/f88d78b85/5242c212693f488288830953d01ce338/FLAG29ad1b88c [2021-11-09 08:44:17,846 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:44:17,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-11-09 08:44:17,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/data/f88d78b85/5242c212693f488288830953d01ce338/FLAG29ad1b88c [2021-11-09 08:44:18,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/data/f88d78b85/5242c212693f488288830953d01ce338 [2021-11-09 08:44:18,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:44:18,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:44:18,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:18,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:44:18,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:44:18,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672975ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18, skipping insertion in model container [2021-11-09 08:44:18,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:44:18,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:44:18,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:18,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:44:18,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:18,677 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:44:18,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18 WrapperNode [2021-11-09 08:44:18,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:18,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:44:18,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:44:18,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:44:18,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:44:18,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:44:18,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:44:18,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:44:18,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (1/1) ... [2021-11-09 08:44:18,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:44:18,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:18,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:44:18,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:44:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:44:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:44:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:44:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:44:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:44:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:44:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:44:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:44:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:44:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:44:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:44:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:44:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:44:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:44:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:44:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:44:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:44:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:44:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:44:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:44:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:44:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:44:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:44:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:44:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:44:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:44:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:44:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:44:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:44:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:44:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:44:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:44:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:44:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:44:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:44:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:44:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:44:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:44:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:44:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:44:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:44:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:44:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:44:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:44:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:44:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:44:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:44:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:44:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:44:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:44:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:44:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:44:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:44:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:44:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:44:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:44:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:44:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:44:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:44:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:44:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:44:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:44:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:44:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:44:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:44:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:44:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:44:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:44:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:44:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:44:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:44:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:44:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:44:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:44:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:44:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:44:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:44:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:44:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:44:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:44:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:44:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:44:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:44:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:44:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:44:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:44:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:44:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:44:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:44:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:44:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:44:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:44:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:44:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:44:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:44:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:44:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 08:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:44:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:44:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:44:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:44:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:44:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:44:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:44:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:44:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:44:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:44:19,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:44:19,308 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-09 08:44:19,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:19 BoogieIcfgContainer [2021-11-09 08:44:19,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:44:19,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:44:19,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:44:19,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:44:19,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:44:18" (1/3) ... [2021-11-09 08:44:19,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e25265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:44:19, skipping insertion in model container [2021-11-09 08:44:19,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:18" (2/3) ... [2021-11-09 08:44:19,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e25265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:44:19, skipping insertion in model container [2021-11-09 08:44:19,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:19" (3/3) ... [2021-11-09 08:44:19,320 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2021-11-09 08:44:19,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:44:19,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-09 08:44:19,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:44:19,382 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 [2021-11-09 08:44:19,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-09 08:44:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 08:44:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:44:19,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:19,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:19,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1320510785, now seen corresponding path program 1 times [2021-11-09 08:44:19,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:19,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764702165] [2021-11-09 08:44:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:19,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:19,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764702165] [2021-11-09 08:44:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764702165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:19,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:19,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:19,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518019664] [2021-11-09 08:44:19,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:19,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:19,774 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:19,882 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-11-09 08:44:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:44:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:44:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:19,892 INFO L225 Difference]: With dead ends: 32 [2021-11-09 08:44:19,892 INFO L226 Difference]: Without dead ends: 29 [2021-11-09 08:44:19,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-09 08:44:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-09 08:44:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-11-09 08:44:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-09 08:44:19,928 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2021-11-09 08:44:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-09 08:44:19,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-09 08:44:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:44:19,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:19,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:19,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:44:19,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1320510786, now seen corresponding path program 1 times [2021-11-09 08:44:19,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:19,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488388035] [2021-11-09 08:44:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:19,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:20,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:20,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488388035] [2021-11-09 08:44:20,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488388035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:20,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:20,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:20,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339127406] [2021-11-09 08:44:20,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:20,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:20,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:20,033 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:20,091 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-09 08:44:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:44:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:44:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:20,092 INFO L225 Difference]: With dead ends: 23 [2021-11-09 08:44:20,093 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 08:44:20,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 08:44:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-09 08:44:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-11-09 08:44:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-09 08:44:20,097 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2021-11-09 08:44:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:20,098 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-09 08:44:20,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-09 08:44:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 08:44:20,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:20,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:20,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:44:20,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1902214687, now seen corresponding path program 1 times [2021-11-09 08:44:20,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:20,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118376173] [2021-11-09 08:44:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:20,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:20,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:20,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118376173] [2021-11-09 08:44:20,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118376173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:20,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:20,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:20,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704855329] [2021-11-09 08:44:20,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:44:20,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:20,214 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-09 08:44:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:20,286 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-11-09 08:44:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:20,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2021-11-09 08:44:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:20,288 INFO L225 Difference]: With dead ends: 22 [2021-11-09 08:44:20,288 INFO L226 Difference]: Without dead ends: 22 [2021-11-09 08:44:20,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-09 08:44:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-09 08:44:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-11-09 08:44:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-09 08:44:20,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-11-09 08:44:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:20,294 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-09 08:44:20,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-09 08:44:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-09 08:44:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:44:20,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:20,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:20,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:44:20,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1160886927, now seen corresponding path program 1 times [2021-11-09 08:44:20,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:20,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908433354] [2021-11-09 08:44:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:20,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:20,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:20,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908433354] [2021-11-09 08:44:20,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908433354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:20,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:20,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:20,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400534577] [2021-11-09 08:44:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:44:20,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:20,448 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-09 08:44:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:20,533 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-09 08:44:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2021-11-09 08:44:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:20,536 INFO L225 Difference]: With dead ends: 21 [2021-11-09 08:44:20,536 INFO L226 Difference]: Without dead ends: 21 [2021-11-09 08:44:20,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-09 08:44:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-09 08:44:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-11-09 08:44:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-09 08:44:20,547 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2021-11-09 08:44:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:20,548 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-09 08:44:20,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-09 08:44:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-09 08:44:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:44:20,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:20,550 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:20,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:44:20,552 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:20,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1627756451, now seen corresponding path program 1 times [2021-11-09 08:44:20,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:20,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970822898] [2021-11-09 08:44:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:20,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:20,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:20,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970822898] [2021-11-09 08:44:20,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970822898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:20,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:20,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781424539] [2021-11-09 08:44:20,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:44:20,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:20,713 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:20,776 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-09 08:44:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:44:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:44:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:20,778 INFO L225 Difference]: With dead ends: 20 [2021-11-09 08:44:20,778 INFO L226 Difference]: Without dead ends: 20 [2021-11-09 08:44:20,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-09 08:44:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-09 08:44:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-09 08:44:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-09 08:44:20,781 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2021-11-09 08:44:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:20,781 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-09 08:44:20,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-09 08:44:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:44:20,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:20,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:20,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:44:20,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 08:44:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1079157486, now seen corresponding path program 1 times [2021-11-09 08:44:20,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:20,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950519299] [2021-11-09 08:44:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:20,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 08:44:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:21,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:21,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950519299] [2021-11-09 08:44:21,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950519299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:21,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:21,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:44:21,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749976996] [2021-11-09 08:44:21,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:44:21,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:44:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:21,062 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:21,228 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-09 08:44:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:44:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 08:44:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:21,232 INFO L225 Difference]: With dead ends: 19 [2021-11-09 08:44:21,232 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 08:44:21,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:44:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 08:44:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 08:44:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 08:44:21,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-09 08:44:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:21,236 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 08:44:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:44:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 08:44:21,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 08:44:21,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-11-09 08:44:21,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-11-09 08:44:21,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-11-09 08:44:21,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-11-09 08:44:21,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-11-09 08:44:21,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-11-09 08:44:21,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11REQUIRES_VIOLATION [2021-11-09 08:44:21,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:44:21,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:44:21,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 08:44:21,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr15ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 08:44:21,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:44:21,253 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-09 08:44:21,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:44:21,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:44:21 BoogieIcfgContainer [2021-11-09 08:44:21,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:44:21,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:44:21,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:44:21,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:44:21,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:19" (3/4) ... [2021-11-09 08:44:21,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 08:44:21,269 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-11-09 08:44:21,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-11-09 08:44:21,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-11-09 08:44:21,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-09 08:44:21,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-09 08:44:21,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-09 08:44:21,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:44:21,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:44:21,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:44:21,329 INFO L168 Benchmark]: Toolchain (without parser) took 3168.39 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 53.0 MB in the beginning and 45.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,331 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:44:21,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.00 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.7 MB in the beginning and 78.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,333 INFO L168 Benchmark]: Boogie Preprocessor took 63.70 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 76.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,333 INFO L168 Benchmark]: RCFGBuilder took 566.21 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 56.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,334 INFO L168 Benchmark]: TraceAbstraction took 1944.78 ms. Allocated memory is still 109.1 MB. Free memory was 55.8 MB in the beginning and 49.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,334 INFO L168 Benchmark]: Witness Printer took 69.38 ms. Allocated memory is still 109.1 MB. Free memory was 49.1 MB in the beginning and 45.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:44:21,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 518.00 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.7 MB in the beginning and 78.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.70 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 76.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.21 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 56.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1944.78 ms. Allocated memory is still 109.1 MB. Free memory was 55.8 MB in the beginning and 49.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 69.38 ms. Allocated memory is still 109.1 MB. Free memory was 49.1 MB in the beginning and 45.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 72 SDslu, 131 SDs, 0 SdLazy, 299 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 38, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 08:44:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eae72b9-529e-4677-828c-40fbead99e47/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE