./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be --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 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be --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 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:21:00,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:21:00,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:21:00,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:21:00,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:21:00,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:21:00,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:21:00,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:21:00,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:21:00,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:21:00,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:21:00,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:21:00,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:21:00,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:21:00,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:21:00,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:21:00,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:21:00,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:21:00,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:21:00,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:21:00,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:21:00,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:21:00,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:21:00,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:21:00,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:21:00,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:21:00,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:21:00,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:21:00,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:21:00,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:21:00,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:21:00,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:21:00,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:21:00,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:21:00,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:21:00,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:21:00,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:21:00,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:21:00,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:21:00,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:21:00,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:21:00,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:21:00,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:21:00,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:21:00,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:21:00,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:21:00,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:21:00,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:21:00,852 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:21:00,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:21:00,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:21:00,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:21:00,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:21:00,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:21:00,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:21:00,854 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:21:00,855 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:21:00,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:21:00,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:21:00,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:21:00,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:21:00,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:21:00,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:21:00,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:21:00,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:21:00,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:00,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:21:00,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:21:00,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:21:00,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:21:00,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:21:00,860 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-10-21 20:21:01,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:21:01,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:21:01,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:21:01,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:21:01,209 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:21:01,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-21 20:21:01,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/fe45358d9/654dd614f0de49ad9464d6012bf8a031/FLAGdec54f2ef [2021-10-21 20:21:01,823 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:21:01,823 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-21 20:21:01,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/fe45358d9/654dd614f0de49ad9464d6012bf8a031/FLAGdec54f2ef [2021-10-21 20:21:02,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/fe45358d9/654dd614f0de49ad9464d6012bf8a031 [2021-10-21 20:21:02,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:21:02,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:21:02,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:02,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:21:02,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:21:02,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17898b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02, skipping insertion in model container [2021-10-21 20:21:02,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:21:02,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:21:02,607 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-21 20:21:02,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:02,634 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:21:02,705 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-21 20:21:02,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:02,744 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:21:02,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02 WrapperNode [2021-10-21 20:21:02,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:02,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:21:02,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:21:02,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:21:02,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:21:02,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:21:02,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:21:02,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:21:02,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:02,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:02,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:21:02,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:21:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:21:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:21:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:21:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:21:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:21:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:21:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:21:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:21:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 20:21:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:21:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:21:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:21:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:21:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:21:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:21:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:21:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:21:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:21:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:21:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:21:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:21:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:21:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:21:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:21:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:21:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:21:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:21:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:21:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:21:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:21:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:21:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:21:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:21:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:21:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:21:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:21:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:21:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:21:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:21:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:21:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:21:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:21:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:21:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:21:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:21:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:21:03,287 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 20:21:03,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:21:03,618 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 20:21:03,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03 BoogieIcfgContainer [2021-10-21 20:21:03,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:21:03,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:21:03,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:21:03,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:21:03,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:21:02" (1/3) ... [2021-10-21 20:21:03,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ca4f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:03, skipping insertion in model container [2021-10-21 20:21:03,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02" (2/3) ... [2021-10-21 20:21:03,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ca4f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:03, skipping insertion in model container [2021-10-21 20:21:03,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03" (3/3) ... [2021-10-21 20:21:03,633 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-10-21 20:21:03,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:21:03,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-21 20:21:03,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:21:03,727 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 [2021-10-21 20:21:03,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-21 20:21:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:21:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:21:03,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:03,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:03,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-10-21 20:21:03,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:03,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502409818] [2021-10-21 20:21:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:03,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:04,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:04,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502409818] [2021-10-21 20:21:04,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502409818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:04,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:04,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:21:04,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370786850] [2021-10-21 20:21:04,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:04,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:04,139 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:04,383 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-10-21 20:21:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:04,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 20:21:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:04,394 INFO L225 Difference]: With dead ends: 98 [2021-10-21 20:21:04,394 INFO L226 Difference]: Without dead ends: 90 [2021-10-21 20:21:04,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-21 20:21:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-21 20:21:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 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) [2021-10-21 20:21:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-21 20:21:04,437 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-10-21 20:21:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:04,438 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-21 20:21:04,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-21 20:21:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:04,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:04,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:04,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:21:04,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-10-21 20:21:04,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:04,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696747263] [2021-10-21 20:21:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:04,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:04,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:04,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696747263] [2021-10-21 20:21:04,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696747263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:04,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:04,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:04,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662484043] [2021-10-21 20:21:04,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:04,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:04,616 INFO L87 Difference]: Start difference. First operand 90 states and 96 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) [2021-10-21 20:21:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:04,911 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-10-21 20:21:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:21:04,912 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 [2021-10-21 20:21:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:04,918 INFO L225 Difference]: With dead ends: 111 [2021-10-21 20:21:04,918 INFO L226 Difference]: Without dead ends: 111 [2021-10-21 20:21:04,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-21 20:21:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-10-21 20:21:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 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) [2021-10-21 20:21:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-10-21 20:21:04,943 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-10-21 20:21:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:04,944 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-10-21 20:21:04,944 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) [2021-10-21 20:21:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-10-21 20:21:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:04,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:04,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:04,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:21:04,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-10-21 20:21:04,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:04,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625761378] [2021-10-21 20:21:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:04,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:05,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:05,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625761378] [2021-10-21 20:21:05,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625761378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:05,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:05,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:05,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336768230] [2021-10-21 20:21:05,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:05,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:05,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:05,114 INFO L87 Difference]: Start difference. First operand 91 states and 107 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) [2021-10-21 20:21:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:05,407 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-10-21 20:21:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:05,408 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 [2021-10-21 20:21:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:05,409 INFO L225 Difference]: With dead ends: 128 [2021-10-21 20:21:05,409 INFO L226 Difference]: Without dead ends: 128 [2021-10-21 20:21:05,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-21 20:21:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-10-21 20:21:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-10-21 20:21:05,419 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-10-21 20:21:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:05,420 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-10-21 20:21:05,420 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) [2021-10-21 20:21:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-10-21 20:21:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:21:05,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:05,421 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:05,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:21:05,422 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:05,423 INFO L82 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-10-21 20:21:05,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:05,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106627941] [2021-10-21 20:21:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:05,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:05,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106627941] [2021-10-21 20:21:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106627941] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:05,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:05,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:21:05,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877116946] [2021-10-21 20:21:05,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:05,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:05,534 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:05,929 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-21 20:21:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:21:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 20:21:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:05,931 INFO L225 Difference]: With dead ends: 156 [2021-10-21 20:21:05,931 INFO L226 Difference]: Without dead ends: 156 [2021-10-21 20:21:05,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:21:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-21 20:21:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-10-21 20:21:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 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) [2021-10-21 20:21:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-10-21 20:21:05,939 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-10-21 20:21:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:05,940 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-10-21 20:21:05,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-10-21 20:21:05,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:21:05,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:05,941 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:05,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:21:05,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-10-21 20:21:05,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:05,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464766419] [2021-10-21 20:21:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:06,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:06,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464766419] [2021-10-21 20:21:06,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464766419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:06,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:06,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:21:06,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10488175] [2021-10-21 20:21:06,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:06,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:06,152 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:06,622 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-10-21 20:21:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:21:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-21 20:21:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:06,624 INFO L225 Difference]: With dead ends: 159 [2021-10-21 20:21:06,625 INFO L226 Difference]: Without dead ends: 159 [2021-10-21 20:21:06,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:21:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-21 20:21:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-10-21 20:21:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 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) [2021-10-21 20:21:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-21 20:21:06,633 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-10-21 20:21:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:06,633 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-21 20:21:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-21 20:21:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:21:06,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:06,635 INFO L512 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] [2021-10-21 20:21:06,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:21:06,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-10-21 20:21:06,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:06,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471988967] [2021-10-21 20:21:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:06,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:06,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:06,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471988967] [2021-10-21 20:21:06,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471988967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:06,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:06,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:21:06,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085593459] [2021-10-21 20:21:06,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:21:06,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:06,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:21:06,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:06,766 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 20:21:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:07,029 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-10-21 20:21:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:21:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 22 [2021-10-21 20:21:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:07,032 INFO L225 Difference]: With dead ends: 191 [2021-10-21 20:21:07,032 INFO L226 Difference]: Without dead ends: 191 [2021-10-21 20:21:07,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:21:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-21 20:21:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-10-21 20:21:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 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) [2021-10-21 20:21:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-10-21 20:21:07,040 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-10-21 20:21:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:07,041 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-10-21 20:21:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 20:21:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-10-21 20:21:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:21:07,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:07,042 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:07,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:21:07,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-10-21 20:21:07,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:07,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129943850] [2021-10-21 20:21:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:07,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:07,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:07,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129943850] [2021-10-21 20:21:07,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129943850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:07,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:07,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:21:07,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902287418] [2021-10-21 20:21:07,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:07,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:07,117 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-21 20:21:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:07,392 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-10-21 20:21:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:21:07,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2021-10-21 20:21:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:07,394 INFO L225 Difference]: With dead ends: 138 [2021-10-21 20:21:07,394 INFO L226 Difference]: Without dead ends: 138 [2021-10-21 20:21:07,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:21:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-21 20:21:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-10-21 20:21:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 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) [2021-10-21 20:21:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-21 20:21:07,399 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-10-21 20:21:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:07,400 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-21 20:21:07,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-21 20:21:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-10-21 20:21:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:21:07,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:07,401 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:21:07,402 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-10-21 20:21:07,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:07,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751489923] [2021-10-21 20:21:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:07,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:21:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:07,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751489923] [2021-10-21 20:21:07,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751489923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:07,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:07,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:21:07,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705657875] [2021-10-21 20:21:07,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:07,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:07,551 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-21 20:21:07,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:07,923 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-10-21 20:21:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:21:07,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2021-10-21 20:21:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:07,925 INFO L225 Difference]: With dead ends: 136 [2021-10-21 20:21:07,925 INFO L226 Difference]: Without dead ends: 136 [2021-10-21 20:21:07,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:21:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-21 20:21:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-10-21 20:21:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 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) [2021-10-21 20:21:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-10-21 20:21:07,931 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-10-21 20:21:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:07,931 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-10-21 20:21:07,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-21 20:21:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-10-21 20:21:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:21:07,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:07,932 INFO L512 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, 1] [2021-10-21 20:21:07,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:21:07,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:07,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-10-21 20:21:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:07,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118758920] [2021-10-21 20:21:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:07,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:21:07,957 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:21:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:21:08,023 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:21:08,024 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:21:08,025 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:21:08,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:21:08,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:21:08,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:21:08,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:21:08,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:21:08,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:21:08,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:21:08,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:21:08,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:21:08,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:21:08,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:21:08,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:21:08,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:21:08,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:21:08,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:21:08,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:21:08,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:21:08,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:21:08,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:21:08,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:21:08,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:21:08,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:21:08,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:21:08,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:21:08,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:21:08,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:21:08,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:21:08,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 20:21:08,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 20:21:08,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 20:21:08,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:08,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:21:08,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:21:08,041 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:21:08,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:21:08 BoogieIcfgContainer [2021-10-21 20:21:08,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:21:08,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:21:08,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:21:08,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:21:08,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03" (3/4) ... [2021-10-21 20:21:08,092 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:21:08,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:21:08,094 INFO L168 Benchmark]: Toolchain (without parser) took 5965.80 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 44.3 MB in the beginning and 74.6 MB in the end (delta: -30.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:08,095 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:08,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.56 ms. Allocated memory is still 83.9 MB. Free memory was 44.1 MB in the beginning and 52.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:08,096 INFO L168 Benchmark]: Boogie Preprocessor took 69.26 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:08,097 INFO L168 Benchmark]: RCFGBuilder took 804.67 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 52.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:08,097 INFO L168 Benchmark]: TraceAbstraction took 4465.02 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.0 MB in the beginning and 74.6 MB in the end (delta: -22.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:08,098 INFO L168 Benchmark]: Witness Printer took 4.54 ms. Allocated memory is still 100.7 MB. Free memory is still 74.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:08,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 62.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 612.56 ms. Allocated memory is still 83.9 MB. Free memory was 44.1 MB in the beginning and 52.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.26 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 804.67 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 52.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4465.02 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.0 MB in the beginning and 74.6 MB in the end (delta: -22.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.54 ms. Allocated memory is still 100.7 MB. Free memory is still 74.6 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 4326.1ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 21.4ms, AutomataDifference: 2672.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 578 SDtfs, 865 SDslu, 1008 SDs, 0 SdLazy, 2288 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1689.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 544.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 92.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.9ms SsaConstructionTime, 212.7ms SatisfiabilityAnalysisTime, 902.1ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 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 [2021-10-21 20:21:08,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:21:10,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:21:10,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:21:10,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:21:10,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:21:10,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:21:10,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:21:10,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:21:10,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:21:10,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:21:10,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:21:10,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:21:10,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:21:10,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:21:10,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:21:10,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:21:10,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:21:10,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:21:10,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:21:10,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:21:10,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:21:10,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:21:10,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:21:10,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:21:10,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:21:10,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:21:10,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:21:10,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:21:10,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:21:10,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:21:10,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:21:10,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:21:10,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:21:10,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:21:10,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:21:10,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:21:10,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:21:10,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:21:10,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:21:10,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:21:10,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:21:10,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:21:10,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:21:10,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:21:10,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:21:10,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:21:10,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:21:10,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:21:10,988 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:21:10,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:21:10,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:21:10,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:21:10,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:21:10,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:21:10,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:21:10,991 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:21:10,992 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:21:10,992 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:21:10,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:21:10,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:21:10,993 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:21:10,993 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:21:10,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:21:10,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:21:10,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:21:10,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:21:10,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:21:10,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:10,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:21:10,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:21:10,996 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:21:10,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:21:10,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:21:10,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:21:10,997 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-10-21 20:21:11,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:21:11,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:21:11,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:21:11,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:21:11,532 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:21:11,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-21 20:21:11,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/c5ca5cc49/e866495c800a41b4a07313c4685468e1/FLAG0c608c270 [2021-10-21 20:21:12,272 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:21:12,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-10-21 20:21:12,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/c5ca5cc49/e866495c800a41b4a07313c4685468e1/FLAG0c608c270 [2021-10-21 20:21:12,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/data/c5ca5cc49/e866495c800a41b4a07313c4685468e1 [2021-10-21 20:21:12,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:21:12,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:21:12,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:12,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:21:12,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:21:12,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:12" (1/1) ... [2021-10-21 20:21:12,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251ce0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:12, skipping insertion in model container [2021-10-21 20:21:12,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:12" (1/1) ... [2021-10-21 20:21:12,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:21:12,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:21:12,990 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-21 20:21:12,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:13,010 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:21:13,055 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_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/sv-benchmarks/c/list-ext-properties/list-ext.i[23551,23564] [2021-10-21 20:21:13,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:13,100 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:21:13,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13 WrapperNode [2021-10-21 20:21:13,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:13,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:21:13,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:21:13,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:21:13,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:21:13,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:21:13,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:21:13,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:21:13,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (1/1) ... [2021-10-21 20:21:13,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:13,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:13,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:21:13,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:21:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:21:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:21:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:21:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:21:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:21:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:21:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:21:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:21:13,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:21:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 20:21:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:21:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:21:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:21:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:21:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:21:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:21:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:21:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:21:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:21:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:21:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:21:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:21:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:21:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:21:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:21:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:21:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:21:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:21:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:21:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:21:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:21:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:21:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:21:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:21:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:21:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:21:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:21:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:21:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:21:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:21:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:21:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:21:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:21:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:21:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:21:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:21:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:21:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:21:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:21:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:21:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:21:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:21:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:21:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:21:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:21:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:21:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:21:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:21:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:21:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:21:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:21:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:21:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:21:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:21:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:21:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:21:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:21:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:21:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:21:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:21:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:21:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:21:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:21:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:21:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:21:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:21:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:21:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:21:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:21:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:21:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:21:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:21:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:21:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:21:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:21:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:21:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:21:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:21:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:21:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:21:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:21:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:21:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:21:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:21:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:21:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:21:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:21:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:21:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:21:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:21:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:21:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:21:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:21:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:21:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:21:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:21:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:21:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:21:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:21:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:21:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:21:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:21:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:21:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:21:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:21:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:21:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:21:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:21:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:21:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 20:21:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:21:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:21:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:21:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:21:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:21:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:21:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:21:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:21:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:21:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:21:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:21:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 20:21:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 20:21:13,864 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 20:21:14,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:21:14,334 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 20:21:14,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:14 BoogieIcfgContainer [2021-10-21 20:21:14,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:21:14,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:21:14,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:21:14,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:21:14,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:21:12" (1/3) ... [2021-10-21 20:21:14,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e054f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:14, skipping insertion in model container [2021-10-21 20:21:14,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:13" (2/3) ... [2021-10-21 20:21:14,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e054f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:14, skipping insertion in model container [2021-10-21 20:21:14,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:14" (3/3) ... [2021-10-21 20:21:14,346 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-10-21 20:21:14,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:21:14,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-21 20:21:14,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:21:14,424 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 [2021-10-21 20:21:14,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-21 20:21:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:21:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:21:14,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:14,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:14,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-10-21 20:21:14,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:14,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329204874] [2021-10-21 20:21:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:14,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:14,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:14,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:21:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:14,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:21:14,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:14,802 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 [2021-10-21 20:21:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:14,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:14,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:14,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329204874] [2021-10-21 20:21:14,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329204874] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:14,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:14,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:21:14,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847772770] [2021-10-21 20:21:14,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:21:15,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:15,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:21:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:21:15,024 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:21:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:15,458 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-21 20:21:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-10-21 20:21:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:15,471 INFO L225 Difference]: With dead ends: 111 [2021-10-21 20:21:15,471 INFO L226 Difference]: Without dead ends: 103 [2021-10-21 20:21:15,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:15,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-21 20:21:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-10-21 20:21:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 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) [2021-10-21 20:21:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-10-21 20:21:15,526 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-10-21 20:21:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:15,527 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-10-21 20:21:15,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 20:21:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-10-21 20:21:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:21:15,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:15,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:15,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:15,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:15,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-10-21 20:21:15,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:15,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39745131] [2021-10-21 20:21:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:15,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:15,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:15,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:15,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:21:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:15,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:21:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:15,938 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 [2021-10-21 20:21:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:16,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:16,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:16,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39745131] [2021-10-21 20:21:16,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39745131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:16,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:16,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 20:21:16,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161271280] [2021-10-21 20:21:16,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:16,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:16,246 INFO L87 Difference]: Start difference. First operand 83 states and 95 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) [2021-10-21 20:21:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:16,930 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-21 20:21:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:16,931 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 10 [2021-10-21 20:21:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:16,932 INFO L225 Difference]: With dead ends: 119 [2021-10-21 20:21:16,933 INFO L226 Difference]: Without dead ends: 119 [2021-10-21 20:21:16,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-21 20:21:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-10-21 20:21:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 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) [2021-10-21 20:21:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-10-21 20:21:16,943 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-10-21 20:21:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:16,944 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-10-21 20:21:16,944 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) [2021-10-21 20:21:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-10-21 20:21:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:21:16,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:16,945 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:16,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:17,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-10-21 20:21:17,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:17,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495318540] [2021-10-21 20:21:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:17,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:17,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:17,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:17,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:21:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:17,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:21:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:17,351 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 [2021-10-21 20:21:17,377 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 23 treesize of output 19 [2021-10-21 20:21:17,403 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 25 treesize of output 13 [2021-10-21 20:21:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:17,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:17,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:17,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495318540] [2021-10-21 20:21:17,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495318540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:17,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:17,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:21:17,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860258541] [2021-10-21 20:21:17,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:17,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:17,525 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-10-21 20:21:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:18,280 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-10-21 20:21:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:21:18,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 17 [2021-10-21 20:21:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:18,283 INFO L225 Difference]: With dead ends: 140 [2021-10-21 20:21:18,283 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 20:21:18,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:21:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 20:21:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-10-21 20:21:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 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) [2021-10-21 20:21:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-10-21 20:21:18,303 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-10-21 20:21:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:18,303 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-10-21 20:21:18,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-10-21 20:21:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-10-21 20:21:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:21:18,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:18,305 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:18,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:18,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:18,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-10-21 20:21:18,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:18,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471373510] [2021-10-21 20:21:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:18,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:18,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:18,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:18,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:21:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:18,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:21:18,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:18,704 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 [2021-10-21 20:21:18,755 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 [2021-10-21 20:21:18,763 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 19 treesize of output 15 [2021-10-21 20:21:18,812 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 39 treesize of output 27 [2021-10-21 20:21:18,821 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 24 treesize of output 12 [2021-10-21 20:21:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:18,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:19,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:19,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471373510] [2021-10-21 20:21:19,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471373510] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:19,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:19,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 20:21:19,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982784922] [2021-10-21 20:21:19,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:21:19,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:21:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:21:19,272 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-21 20:21:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:20,928 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-21 20:21:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:21:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 17 [2021-10-21 20:21:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:20,930 INFO L225 Difference]: With dead ends: 145 [2021-10-21 20:21:20,930 INFO L226 Difference]: Without dead ends: 145 [2021-10-21 20:21:20,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 454.4ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:21:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-21 20:21:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-10-21 20:21:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 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) [2021-10-21 20:21:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-21 20:21:20,940 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-10-21 20:21:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:20,941 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-21 20:21:20,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-21 20:21:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-21 20:21:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:21:20,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:20,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:20,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-21 20:21:21,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:21,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-10-21 20:21:21,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:21,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102005676] [2021-10-21 20:21:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:21,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:21,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:21,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:21:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:21,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:21:21,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:21,453 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 [2021-10-21 20:21:21,495 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-21 20:21:21,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 11 [2021-10-21 20:21:21,548 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 15 treesize of output 7 [2021-10-21 20:21:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:21,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:21,712 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 148 treesize of output 140 [2021-10-21 20:21:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:21,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:21,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102005676] [2021-10-21 20:21:21,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102005676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:21,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:21,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-21 20:21:21,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91056877] [2021-10-21 20:21:21,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:21:21,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:21:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:21:21,849 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-10-21 20:21:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:22,562 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-10-21 20:21:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:21:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 18 [2021-10-21 20:21:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:22,564 INFO L225 Difference]: With dead ends: 192 [2021-10-21 20:21:22,564 INFO L226 Difference]: Without dead ends: 192 [2021-10-21 20:21:22,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:21:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-21 20:21:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-10-21 20:21:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 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) [2021-10-21 20:21:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-10-21 20:21:22,575 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-10-21 20:21:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:22,576 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-10-21 20:21:22,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-10-21 20:21:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-10-21 20:21:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:21:22,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:22,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:22,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:22,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:22,787 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-10-21 20:21:22,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:22,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130569351] [2021-10-21 20:21:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:22,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:22,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:22,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:21:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:23,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:21:23,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:23,057 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 [2021-10-21 20:21:23,102 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 19 treesize of output 15 [2021-10-21 20:21:23,112 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 [2021-10-21 20:21:23,155 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 39 treesize of output 27 [2021-10-21 20:21:23,161 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 24 treesize of output 12 [2021-10-21 20:21:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:23,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:23,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:23,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130569351] [2021-10-21 20:21:23,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130569351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:23,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:23,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 20:21:23,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078108423] [2021-10-21 20:21:23,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:21:23,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:21:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:21:23,577 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-10-21 20:21:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:25,151 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-10-21 20:21:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:21:25,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 18 [2021-10-21 20:21:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:25,153 INFO L225 Difference]: With dead ends: 124 [2021-10-21 20:21:25,153 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 20:21:25,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 464.6ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:21:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 20:21:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-10-21 20:21:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 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) [2021-10-21 20:21:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-21 20:21:25,161 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-10-21 20:21:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:25,162 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-21 20:21:25,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-10-21 20:21:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-21 20:21:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:21:25,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:25,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:25,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:25,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:25,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-10-21 20:21:25,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:25,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763499290] [2021-10-21 20:21:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:25,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:25,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:25,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:21:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:25,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:21:25,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:25,592 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 [2021-10-21 20:21:25,615 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 23 treesize of output 19 [2021-10-21 20:21:25,639 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 25 treesize of output 13 [2021-10-21 20:21:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:25,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:25,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:25,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763499290] [2021-10-21 20:21:25,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763499290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:25,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:25,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:21:25,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629513527] [2021-10-21 20:21:25,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:25,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:25,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:25,750 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-21 20:21:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:26,224 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-10-21 20:21:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:21:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-21 20:21:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:26,225 INFO L225 Difference]: With dead ends: 113 [2021-10-21 20:21:26,225 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 20:21:26,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:21:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 20:21:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-10-21 20:21:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 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) [2021-10-21 20:21:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-10-21 20:21:26,232 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-10-21 20:21:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:26,235 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-10-21 20:21:26,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-21 20:21:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-10-21 20:21:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:26,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:26,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:26,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:26,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:26,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-21 20:21:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:26,443 INFO L82 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-10-21 20:21:26,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:21:26,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994314913] [2021-10-21 20:21:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:26,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:21:26,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:21:26,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:21:26,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:21:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:21:26,622 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:21:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:21:26,694 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:21:26,695 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:21:26,696 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:21:26,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:21:26,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:21:26,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:21:26,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:21:26,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:21:26,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:21:26,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:21:26,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:21:26,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:21:26,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:21:26,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:21:26,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:21:26,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:21:26,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:21:26,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:21:26,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:21:26,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:21:26,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:21:26,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:21:26,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:21:26,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:21:26,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:21:26,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:21:26,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:21:26,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:21:26,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:21:26,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:21:26,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 20:21:26,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 20:21:26,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 20:21:26,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:21:26,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:21:26,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:26,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:21:26,912 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:21:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:21:26 BoogieIcfgContainer [2021-10-21 20:21:26,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:21:26,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:21:26,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:21:26,940 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:21:26,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:14" (3/4) ... [2021-10-21 20:21:26,943 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:21:26,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:21:26,945 INFO L168 Benchmark]: Toolchain (without parser) took 14382.13 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 66.3 MB in the beginning and 59.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:26,945 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:26,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.12 ms. Allocated memory is still 83.9 MB. Free memory was 66.1 MB in the beginning and 58.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:26,946 INFO L168 Benchmark]: Boogie Preprocessor took 158.55 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 55.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:26,947 INFO L168 Benchmark]: RCFGBuilder took 1075.58 ms. Allocated memory is still 83.9 MB. Free memory was 55.4 MB in the beginning and 54.6 MB in the end (delta: 775.4 kB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:26,947 INFO L168 Benchmark]: TraceAbstraction took 12600.06 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.9 MB in the beginning and 59.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:26,948 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 107.0 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:26,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.12 ms. Allocated memory is still 83.9 MB. Free memory was 66.1 MB in the beginning and 58.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 158.55 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 55.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1075.58 ms. Allocated memory is still 83.9 MB. Free memory was 55.4 MB in the beginning and 54.6 MB in the end (delta: 775.4 kB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12600.06 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.9 MB in the beginning and 59.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 107.0 MB. Free memory is still 59.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L555] p->n = 0 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L559] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 12498.7ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 41.8ms, AutomataDifference: 6350.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 406 SDtfs, 1052 SDslu, 1045 SDs, 0 SdLazy, 1679 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4687.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1494.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 100.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 90.7ms SsaConstructionTime, 293.2ms SatisfiabilityAnalysisTime, 2699.2ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 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 [2021-10-21 20:21:27,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63a84d8-0ecd-4f6a-845b-2c3a3c9d0e74/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...