./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg --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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:50,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:50,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:06:50,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:06:50,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:06:50,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:06:50,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:06:50,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:06:50,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:06:50,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:06:50,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:06:50,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:06:50,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:06:50,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:06:50,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:06:50,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:06:50,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:06:50,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:06:50,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:06:50,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:06:50,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:06:50,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:06:50,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:06:50,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:06:50,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:06:50,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:06:50,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:06:50,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:06:50,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:06:50,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:06:50,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:06:50,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:06:50,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:06:50,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:06:50,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:06:50,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:06:50,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:06:50,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:06:50,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:06:50,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:06:50,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:06:50,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:06:50,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:06:50,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:06:50,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:06:50,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:06:50,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:06:50,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:06:50,938 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:06:50,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:06:50,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:06:50,939 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:06:50,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:06:50,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:06:50,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:06:50,940 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:06:50,941 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:06:50,941 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:06:50,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:06:50,941 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:06:50,942 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:06:50,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:06:50,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:06:50,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:06:50,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:06:50,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:50,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:06:50,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:06:50,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:06:50,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:06:50,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:06:50,945 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_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-28 09:06:51,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:06:51,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:06:51,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:06:51,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:06:51,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:06:51,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 09:06:51,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/11ab0cc66/e78c5321d38646d5a27b517c992007b7/FLAG9fdc22539 [2021-10-28 09:06:51,859 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:06:51,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 09:06:51,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/11ab0cc66/e78c5321d38646d5a27b517c992007b7/FLAG9fdc22539 [2021-10-28 09:06:52,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/11ab0cc66/e78c5321d38646d5a27b517c992007b7 [2021-10-28 09:06:52,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:06:52,193 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:06:52,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:52,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:06:52,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:06:52,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d0aaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52, skipping insertion in model container [2021-10-28 09:06:52,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:06:52,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:06:52,628 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 09:06:52,631 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 09:06:52,633 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 09:06:52,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:52,647 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:06:52,685 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 09:06:52,687 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 09:06:52,689 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 09:06:52,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:52,725 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:06:52,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52 WrapperNode [2021-10-28 09:06:52,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:52,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:06:52,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:06:52,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:06:52,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:06:52,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:06:52,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:06:52,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:06:52,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (1/1) ... [2021-10-28 09:06:52,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:52,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:52,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:06:52,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:06:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:06:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:06:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:06:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:06:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:06:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:06:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:06:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:06:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:06:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:06:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:06:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:06:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:06:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:06:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:06:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:06:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:06:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:06:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:06:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:06:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:06:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:06:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:06:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:06:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:06:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:06:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:06:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:06:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:06:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:06:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:06:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:06:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:06:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:06:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:06:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:06:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:06:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:06:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:06:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:06:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:06:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:06:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:06:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:06:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:06:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:06:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:06:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:06:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:06:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:06:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:06:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:06:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:06:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:06:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:06:53,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:06:53,544 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:06:53,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:53 BoogieIcfgContainer [2021-10-28 09:06:53,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:06:53,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:06:53,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:06:53,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:06:53,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:52" (1/3) ... [2021-10-28 09:06:53,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b50c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:53, skipping insertion in model container [2021-10-28 09:06:53,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:52" (2/3) ... [2021-10-28 09:06:53,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b50c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:53, skipping insertion in model container [2021-10-28 09:06:53,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:53" (3/3) ... [2021-10-28 09:06:53,554 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-28 09:06:53,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:06:53,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-28 09:06:53,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:06:53,615 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:06:53,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-28 09:06:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:06:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:06:53,640 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:53,640 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:53,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-10-28 09:06:53,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:53,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904689765] [2021-10-28 09:06:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:53,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:53,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:53,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904689765] [2021-10-28 09:06:53,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904689765] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:53,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:53,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:53,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324255100] [2021-10-28 09:06:53,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:53,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:53,939 INFO L87 Difference]: Start difference. First operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:54,192 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-28 09:06:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:06:54,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:06:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:54,203 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:06:54,203 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 09:06:54,204 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 [2021-10-28 09:06:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 09:06:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-10-28 09:06:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.835820895522388) internal successors, (123), 115 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-10-28 09:06:54,248 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-10-28 09:06:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:54,248 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-10-28 09:06:54,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-10-28 09:06:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:06:54,249 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:54,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:54,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:06:54,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:54,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-10-28 09:06:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:54,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147788882] [2021-10-28 09:06:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:54,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:54,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:54,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147788882] [2021-10-28 09:06:54,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147788882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:54,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:54,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:54,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368689217] [2021-10-28 09:06:54,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:54,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:54,385 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:54,677 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-10-28 09:06:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:06:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:06:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:54,680 INFO L225 Difference]: With dead ends: 137 [2021-10-28 09:06:54,680 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 09:06:54,681 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 [2021-10-28 09:06:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 09:06:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-10-28 09:06:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 120 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-28 09:06:54,691 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-10-28 09:06:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:54,692 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-28 09:06:54,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-28 09:06:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:06:54,693 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:54,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:54,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:06:54,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-10-28 09:06:54,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:54,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167440650] [2021-10-28 09:06:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:54,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:54,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:54,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167440650] [2021-10-28 09:06:54,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167440650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:54,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:54,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:06:54,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399010001] [2021-10-28 09:06:54,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:06:54,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:06:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:54,803 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:55,080 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-10-28 09:06:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:06:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:55,084 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:06:55,084 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 09:06:55,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 09:06:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-10-28 09:06:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-28 09:06:55,101 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-10-28 09:06:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-28 09:06:55,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-28 09:06:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:06:55,103 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:55,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:55,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:06:55,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-10-28 09:06:55,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:55,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725513956] [2021-10-28 09:06:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:55,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:55,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:55,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725513956] [2021-10-28 09:06:55,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725513956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:55,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:55,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:55,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990673478] [2021-10-28 09:06:55,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:55,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:55,325 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:55,627 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-10-28 09:06:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:55,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:06:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:55,629 INFO L225 Difference]: With dead ends: 155 [2021-10-28 09:06:55,629 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:06:55,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:06:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:06:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-10-28 09:06:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 122 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-28 09:06:55,644 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-10-28 09:06:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-28 09:06:55,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-28 09:06:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:06:55,646 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:55,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:55,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:06:55,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-10-28 09:06:55,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:55,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355691128] [2021-10-28 09:06:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:55,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:55,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:55,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355691128] [2021-10-28 09:06:55,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355691128] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:55,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:55,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:06:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669283747] [2021-10-28 09:06:55,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:06:55,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:06:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:55,727 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2021-10-28 09:06:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:55,957 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-28 09:06:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 [2021-10-28 09:06:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:55,959 INFO L225 Difference]: With dead ends: 140 [2021-10-28 09:06:55,972 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 09:06:55,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 09:06:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-28 09:06:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-28 09:06:55,980 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-10-28 09:06:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-28 09:06:55,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2021-10-28 09:06:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-28 09:06:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:06:55,981 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:55,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:55,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:06:55,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-10-28 09:06:55,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:55,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338339161] [2021-10-28 09:06:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:55,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:56,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:56,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338339161] [2021-10-28 09:06:56,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338339161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:56,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:56,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:56,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481779570] [2021-10-28 09:06:56,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:56,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:56,117 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:56,401 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-10-28 09:06:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:06:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:06:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:56,403 INFO L225 Difference]: With dead ends: 125 [2021-10-28 09:06:56,403 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 09:06:56,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:06:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 09:06:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-10-28 09:06:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-28 09:06:56,410 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-10-28 09:06:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:56,411 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-28 09:06:56,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-28 09:06:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:06:56,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:56,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:56,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:06:56,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:56,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-10-28 09:06:56,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:56,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967530856] [2021-10-28 09:06:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:56,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:56,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:56,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967530856] [2021-10-28 09:06:56,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967530856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:56,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:56,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:56,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718704376] [2021-10-28 09:06:56,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:56,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:56,513 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:56,841 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-28 09:06:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:06:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:06:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:56,842 INFO L225 Difference]: With dead ends: 125 [2021-10-28 09:06:56,842 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 09:06:56,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:06:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 09:06:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-10-28 09:06:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-28 09:06:56,856 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-10-28 09:06:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:56,856 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-28 09:06:56,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-28 09:06:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:06:56,857 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:56,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:56,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:06:56,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-10-28 09:06:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:56,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850379715] [2021-10-28 09:06:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:56,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:56,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:56,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850379715] [2021-10-28 09:06:56,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850379715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:56,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:56,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:56,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110803753] [2021-10-28 09:06:56,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:56,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:56,944 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:57,237 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-10-28 09:06:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:06:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:06:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:57,238 INFO L225 Difference]: With dead ends: 181 [2021-10-28 09:06:57,239 INFO L226 Difference]: Without dead ends: 181 [2021-10-28 09:06:57,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:06:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-28 09:06:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-10-28 09:06:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 121 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-28 09:06:57,248 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-10-28 09:06:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:57,249 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-28 09:06:57,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-28 09:06:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:06:57,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:57,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:57,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:06:57,251 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:06:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-10-28 09:06:57,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:57,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319976289] [2021-10-28 09:06:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:57,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:57,280 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:06:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:57,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:06:57,335 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:06:57,336 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:57,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:06:57,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:06:57,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:06:57,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:06:57,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:06:57,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:06:57,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:06:57,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:06:57,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:06:57,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:06:57,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:06:57,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:06:57,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:06:57,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:06:57,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:06:57,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:06:57,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:06:57,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:06:57,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:06:57,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:06:57,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:06:57,352 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:06:57,352 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:57,352 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:06:57,352 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:06:57,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:57,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:06:57,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:06:57,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:06:57,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:06:57,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:06:57,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:06:57,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 09:06:57,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:06:57,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 09:06:57,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:06:57,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:06:57,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:06:57,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:06:57,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 09:06:57,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-28 09:06:57,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 09:06:57,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:06:57,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:06:57,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:57,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:57,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:06:57,366 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:57,370 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:06:57,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:06:57 BoogieIcfgContainer [2021-10-28 09:06:57,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:06:57,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:06:57,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:06:57,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:06:57,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:53" (3/4) ... [2021-10-28 09:06:57,417 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:06:57,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:06:57,419 INFO L168 Benchmark]: Toolchain (without parser) took 5224.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.8 MB in the beginning and 43.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:57,425 INFO L168 Benchmark]: CDTParser took 0.23 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: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:57,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.88 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 74.4 MB in the end (delta: -23.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:57,426 INFO L168 Benchmark]: Boogie Preprocessor took 66.57 ms. Allocated memory is still 107.0 MB. Free memory was 74.4 MB in the beginning and 71.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:57,427 INFO L168 Benchmark]: RCFGBuilder took 751.60 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 46.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:57,427 INFO L168 Benchmark]: TraceAbstraction took 3864.12 ms. Allocated memory is still 107.0 MB. Free memory was 46.2 MB in the beginning and 43.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:57,427 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 107.0 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:57,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 528.88 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 74.4 MB in the end (delta: -23.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.57 ms. Allocated memory is still 107.0 MB. Free memory was 74.4 MB in the beginning and 71.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 751.60 ms. Allocated memory is still 107.0 MB. Free memory was 71.8 MB in the beginning and 46.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3864.12 ms. Allocated memory is still 107.0 MB. Free memory was 46.2 MB in the beginning and 43.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 107.0 MB. Free memory is still 43.7 MB. There was no memory consumed. 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 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:06:57,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:59,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:59,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:07:00,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:07:00,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:07:00,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:07:00,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:07:00,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:07:00,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:07:00,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:07:00,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:07:00,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:07:00,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:07:00,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:07:00,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:07:00,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:07:00,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:07:00,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:07:00,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:07:00,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:07:00,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:07:00,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:07:00,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:07:00,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:07:00,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:07:00,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:07:00,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:07:00,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:07:00,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:07:00,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:07:00,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:07:00,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:07:00,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:07:00,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:07:00,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:07:00,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:07:00,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:07:00,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:07:00,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:07:00,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:07:00,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:07:00,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:07:00,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:07:00,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:07:00,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:07:00,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:07:00,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:07:00,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:07:00,131 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:07:00,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:07:00,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:07:00,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:07:00,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:07:00,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:07:00,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:07:00,133 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:07:00,133 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:07:00,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:07:00,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:07:00,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:07:00,134 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:07:00,134 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:07:00,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:07:00,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:07:00,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:07:00,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:07:00,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:07:00,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:07:00,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:07:00,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:07:00,136 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:07:00,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:07:00,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:07:00,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:07:00,137 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-28 09:07:00,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:07:00,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:07:00,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:07:00,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:07:00,566 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:07:00,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 09:07:00,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/ad8e0bbb7/dc0ec6710b714300ac0860355d766ef0/FLAG5aa183a33 [2021-10-28 09:07:01,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:07:01,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-28 09:07:01,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/ad8e0bbb7/dc0ec6710b714300ac0860355d766ef0/FLAG5aa183a33 [2021-10-28 09:07:01,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/data/ad8e0bbb7/dc0ec6710b714300ac0860355d766ef0 [2021-10-28 09:07:01,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:07:01,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:07:01,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:07:01,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:07:01,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:07:01,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:07:01" (1/1) ... [2021-10-28 09:07:01,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3846e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:01, skipping insertion in model container [2021-10-28 09:07:01,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:07:01" (1/1) ... [2021-10-28 09:07:01,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:07:01,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:07:01,988 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 09:07:01,991 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 09:07:01,993 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 09:07:01,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:07:02,016 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:07:02,057 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-28 09:07:02,058 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-28 09:07:02,060 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_187de221-b038-4c7c-99f7-58b4e1fabe08/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-28 09:07:02,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:07:02,108 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:07:02,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02 WrapperNode [2021-10-28 09:07:02,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:07:02,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:07:02,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:07:02,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:07:02,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:07:02,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:07:02,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:07:02,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:07:02,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (1/1) ... [2021-10-28 09:07:02,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:07:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:07:02,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:07:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:07:02,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:07:02,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:07:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:07:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:07:02,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:07:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:07:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:07:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:07:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:07:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:07:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:07:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:07:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:07:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:07:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:07:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:07:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:07:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:07:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:07:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:07:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:07:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:07:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:07:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:07:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:07:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:07:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:07:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:07:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:07:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:07:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:07:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:07:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:07:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:07:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:07:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:07:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:07:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:07:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:07:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:07:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:07:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:07:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:07:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:07:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:07:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:07:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:07:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:07:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:07:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:07:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:07:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:07:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:07:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:07:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:07:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:07:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:07:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:07:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:07:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:07:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:07:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:07:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:07:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:07:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:07:03,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:07:03,291 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:07:03,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:07:03 BoogieIcfgContainer [2021-10-28 09:07:03,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:07:03,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:07:03,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:07:03,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:07:03,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:07:01" (1/3) ... [2021-10-28 09:07:03,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b314317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:07:03, skipping insertion in model container [2021-10-28 09:07:03,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:07:02" (2/3) ... [2021-10-28 09:07:03,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b314317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:07:03, skipping insertion in model container [2021-10-28 09:07:03,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:07:03" (3/3) ... [2021-10-28 09:07:03,302 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-28 09:07:03,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:07:03,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-28 09:07:03,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:07:03,367 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:07:03,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-28 09:07:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:07:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:07:03,408 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:03,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:03,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-10-28 09:07:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:03,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767148039] [2021-10-28 09:07:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:03,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:03,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:03,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:03,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:07:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:07:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:03,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:03,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:03,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:03,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767148039] [2021-10-28 09:07:03,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767148039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:03,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:03,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:07:03,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871028922] [2021-10-28 09:07:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:07:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:07:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:07:03,792 INFO L87 Difference]: Start difference. First operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:04,084 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-28 09:07:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:07:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:07:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:04,095 INFO L225 Difference]: With dead ends: 125 [2021-10-28 09:07:04,096 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 09:07:04,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:07:04,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 09:07:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-28 09:07:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-10-28 09:07:04,149 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-10-28 09:07:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:04,150 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-10-28 09:07:04,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-10-28 09:07:04,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:07:04,151 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:04,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:04,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:04,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:04,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-10-28 09:07:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:04,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34834266] [2021-10-28 09:07:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:04,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:04,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:04,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:04,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:07:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:04,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:07:04,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:04,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:04,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:04,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:04,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34834266] [2021-10-28 09:07:04,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34834266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:04,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:04,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:07:04,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058709531] [2021-10-28 09:07:04,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:07:04,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:07:04,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:07:04,643 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:05,006 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-28 09:07:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:07:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:07:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:05,011 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:07:05,011 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 09:07:05,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:07:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 09:07:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-10-28 09:07:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.75) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-10-28 09:07:05,029 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-10-28 09:07:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:05,030 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-10-28 09:07:05,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-10-28 09:07:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:07:05,031 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:05,031 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:05,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:05,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:05,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-10-28 09:07:05,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:05,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072700875] [2021-10-28 09:07:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:05,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:05,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:05,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:07:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:05,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:07:05,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:05,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:05,484 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:07:05,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-10-28 09:07:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:05,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:05,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:05,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072700875] [2021-10-28 09:07:05,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072700875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:05,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:05,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:07:05,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318176231] [2021-10-28 09:07:05,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:07:05,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:07:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:07:05,594 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:06,022 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-28 09:07:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:07:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:07:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:06,026 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:07:06,027 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:07:06,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:07:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:07:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-10-28 09:07:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-28 09:07:06,044 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-10-28 09:07:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:06,044 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-28 09:07:06,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-28 09:07:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:07:06,045 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:06,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:06,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:06,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:06,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-10-28 09:07:06,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:06,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931677207] [2021-10-28 09:07:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:06,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:06,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:07:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:06,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:07:06,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:06,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:06,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:06,587 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:07:06,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-28 09:07:06,600 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:07:06,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-10-28 09:07:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:06,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:09,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:09,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931677207] [2021-10-28 09:07:09,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931677207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:09,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:09,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:07:09,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114659208] [2021-10-28 09:07:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:07:09,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:09,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:07:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-28 09:07:09,406 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:21,172 WARN L207 SmtUtils]: Spent 6.26 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 09:07:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:28,659 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-10-28 09:07:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:07:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:07:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:28,662 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:07:28,662 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 09:07:28,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-28 09:07:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 09:07:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-10-28 09:07:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 107 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-28 09:07:28,675 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-10-28 09:07:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:28,676 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-28 09:07:28,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-28 09:07:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:07:28,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:28,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:28,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:28,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:28,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:28,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-10-28 09:07:28,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:28,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788383769] [2021-10-28 09:07:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:28,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:28,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:28,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:28,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:07:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:29,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:07:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:29,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:29,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:29,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788383769] [2021-10-28 09:07:29,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788383769] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:29,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:29,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:07:29,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039502069] [2021-10-28 09:07:29,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:07:29,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:07:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:07:29,139 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:29,455 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-10-28 09:07:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:07:29,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 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 13 [2021-10-28 09:07:29,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:29,458 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:07:29,458 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 09:07:29,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:07:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 09:07:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-10-28 09:07:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 105 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-10-28 09:07:29,468 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-10-28 09:07:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:29,469 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-10-28 09:07:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-10-28 09:07:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:07:29,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:29,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:29,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:29,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:29,686 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-10-28 09:07:29,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:29,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205423209] [2021-10-28 09:07:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:29,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:29,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:07:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:29,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:07:29,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:29,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:29,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 09:07:29,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-28 09:07:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:30,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:30,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:30,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205423209] [2021-10-28 09:07:30,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205423209] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:30,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:30,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:07:30,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043127705] [2021-10-28 09:07:30,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:07:30,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:07:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:07:30,080 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:30,736 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-10-28 09:07:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:07:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 [2021-10-28 09:07:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:30,738 INFO L225 Difference]: With dead ends: 112 [2021-10-28 09:07:30,738 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 09:07:30,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:07:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 09:07:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-10-28 09:07:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 104 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-10-28 09:07:30,751 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-10-28 09:07:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:30,752 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-10-28 09:07:30,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-10-28 09:07:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:07:30,753 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:30,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:30,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:30,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:30,964 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:30,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-10-28 09:07:30,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:30,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803116248] [2021-10-28 09:07:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:30,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:30,978 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:30,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:07:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:31,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:07:31,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:31,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:07:31,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 09:07:31,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 09:07:31,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-28 09:07:31,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-28 09:07:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:31,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:31,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:31,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803116248] [2021-10-28 09:07:31,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803116248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:31,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:31,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:07:31,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826161738] [2021-10-28 09:07:31,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:07:31,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:07:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:07:31,784 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:33,888 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-10-28 09:07:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:07:33,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 [2021-10-28 09:07:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:33,890 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:07:33,890 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:07:33,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:07:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:07:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-10-28 09:07:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-10-28 09:07:33,896 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-10-28 09:07:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:33,896 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-10-28 09:07:33,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-10-28 09:07:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:07:33,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:33,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:33,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:34,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:34,109 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-10-28 09:07:34,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:34,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389876736] [2021-10-28 09:07:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:34,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:34,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:07:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:07:34,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:07:34,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:07:34,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:07:34,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 09:07:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:34,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:07:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:07:34,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:07:34,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389876736] [2021-10-28 09:07:34,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389876736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:07:34,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:07:34,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:07:34,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183270048] [2021-10-28 09:07:34,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:07:34,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:07:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:07:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:07:34,481 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:07:34,992 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-10-28 09:07:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:07:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:07:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:07:34,993 INFO L225 Difference]: With dead ends: 166 [2021-10-28 09:07:34,993 INFO L226 Difference]: Without dead ends: 166 [2021-10-28 09:07:34,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:07:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-28 09:07:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-10-28 09:07:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-10-28 09:07:34,999 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-10-28 09:07:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:07:34,999 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-10-28 09:07:35,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:07:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-10-28 09:07:35,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:07:35,001 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:07:35,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:35,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:35,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:35,216 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-28 09:07:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:07:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-10-28 09:07:35,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:07:35,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134048412] [2021-10-28 09:07:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:07:35,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:07:35,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:07:35,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:07:35,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:07:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:07:35,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:07:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:07:35,439 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:07:35,439 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:07:35,440 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:07:35,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:07:35,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:07:35,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:07:35,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:07:35,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:07:35,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:07:35,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:07:35,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:07:35,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-28 09:07:35,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 09:07:35,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:07:35,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:07:35,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:07:35,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:07:35,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:35,685 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:07:35,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:07:35,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:07:35 BoogieIcfgContainer [2021-10-28 09:07:35,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:07:35,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:07:35,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:07:35,708 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:07:35,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:07:03" (3/4) ... [2021-10-28 09:07:35,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:07:35,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:07:35,712 INFO L168 Benchmark]: Toolchain (without parser) took 34150.09 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.1 MB in the beginning and 65.9 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:35,712 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:35,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.41 ms. Allocated memory is still 75.5 MB. Free memory was 38.9 MB in the beginning and 51.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:35,713 INFO L168 Benchmark]: Boogie Preprocessor took 128.59 ms. Allocated memory is still 75.5 MB. Free memory was 51.8 MB in the beginning and 48.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:35,714 INFO L168 Benchmark]: RCFGBuilder took 1053.97 ms. Allocated memory is still 75.5 MB. Free memory was 48.7 MB in the beginning and 45.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:35,714 INFO L168 Benchmark]: TraceAbstraction took 32412.35 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.0 MB in the beginning and 65.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:35,714 INFO L168 Benchmark]: Witness Printer took 3.12 ms. Allocated memory is still 92.3 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:35,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.41 ms. Allocated memory is still 75.5 MB. Free memory was 38.9 MB in the beginning and 51.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 128.59 ms. Allocated memory is still 75.5 MB. Free memory was 51.8 MB in the beginning and 48.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1053.97 ms. Allocated memory is still 75.5 MB. Free memory was 48.7 MB in the beginning and 45.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32412.35 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.0 MB in the beginning and 65.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.12 ms. Allocated memory is still 92.3 MB. Free memory is still 65.9 MB. There was no memory consumed. 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 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: 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 5 procedures, 133 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 32.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 957 SDslu, 902 SDs, 0 SdLazy, 1482 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 5 QuantifiedInterpolants, 873 SizeOfPredicates, 23 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:07:35,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_187de221-b038-4c7c-99f7-58b4e1fabe08/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...