./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF --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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:33:45,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:33:45,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:33:45,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:33:45,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:33:45,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:33:45,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:33:45,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:33:45,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:33:45,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:33:45,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:33:45,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:33:45,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:33:45,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:33:45,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:33:45,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:33:45,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:33:45,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:33:45,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:33:45,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:33:45,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:33:45,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:33:45,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:33:45,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:33:45,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:33:45,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:33:45,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:33:45,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:33:45,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:33:45,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:33:45,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:33:45,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:33:45,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:33:45,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:33:45,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:33:45,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:33:45,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:33:45,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:33:45,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:33:45,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:33:45,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:33:45,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:33:45,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:33:45,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:33:45,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:33:45,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:33:45,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:33:45,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:33:45,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:33:45,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:33:45,177 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:33:45,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:33:45,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:33:45,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:33:45,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:33:45,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:33:45,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:33:45,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:33:45,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:33:45,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:33:45,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:33:45,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:33:45,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:33:45,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:33:45,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:33:45,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:33:45,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:33:45,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:45,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:33:45,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:33:45,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:33:45,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:33:45,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:33:45,185 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2021-11-20 05:33:45,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:33:45,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:33:45,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:33:45,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:33:45,523 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:33:45,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-properties/list-1.i [2021-11-20 05:33:45,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/9b34ac17c/826920c476a146c9828cb24365714f40/FLAG24536a8af [2021-11-20 05:33:46,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:33:46,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i [2021-11-20 05:33:46,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/9b34ac17c/826920c476a146c9828cb24365714f40/FLAG24536a8af [2021-11-20 05:33:46,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/9b34ac17c/826920c476a146c9828cb24365714f40 [2021-11-20 05:33:46,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:33:46,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:33:46,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:46,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:33:46,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:33:46,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:46,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d95a5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46, skipping insertion in model container [2021-11-20 05:33:46,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:46,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:33:46,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:33:46,845 WARN L230 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-11-20 05:33:46,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:46,874 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:33:46,949 WARN L230 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-11-20 05:33:46,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:46,981 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:33:46,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46 WrapperNode [2021-11-20 05:33:46,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:46,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:46,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:33:46,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:33:46,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,031 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-11-20 05:33:47,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:47,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:33:47,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:33:47,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:33:47,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:33:47,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:33:47,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:33:47,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:33:47,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (1/1) ... [2021-11-20 05:33:47,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:47,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:33:47,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:33:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-20 05:33:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-20 05:33:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:33:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:33:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:33:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:33:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:33:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:33:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:33:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:33:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:33:47,290 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:33:47,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:33:47,343 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-20 05:33:47,573 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:33:47,580 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:33:47,580 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 05:33:47,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:47 BoogieIcfgContainer [2021-11-20 05:33:47,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:33:47,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:33:47,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:33:47,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:33:47,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:33:46" (1/3) ... [2021-11-20 05:33:47,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976ff60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:47, skipping insertion in model container [2021-11-20 05:33:47,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:46" (2/3) ... [2021-11-20 05:33:47,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6976ff60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:47, skipping insertion in model container [2021-11-20 05:33:47,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:47" (3/3) ... [2021-11-20 05:33:47,596 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2021-11-20 05:33:47,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:33:47,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-20 05:33:47,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:33:47,653 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:33:47,653 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-20 05:33:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:33:47,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:47,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:47,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238161, now seen corresponding path program 1 times [2021-11-20 05:33:47,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:47,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041666134] [2021-11-20 05:33:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:47,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:47,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041666134] [2021-11-20 05:33:47,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041666134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:47,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:47,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:33:47,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616719865] [2021-11-20 05:33:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:47,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:47,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:47,960 INFO L87 Difference]: Start difference. First operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:48,100 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-11-20 05:33:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:48,102 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:33:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:48,111 INFO L225 Difference]: With dead ends: 75 [2021-11-20 05:33:48,111 INFO L226 Difference]: Without dead ends: 68 [2021-11-20 05:33:48,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:33:48,117 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 115 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:48,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 40 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-20 05:33:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-11-20 05:33:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-11-20 05:33:48,154 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 7 [2021-11-20 05:33:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:48,155 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-11-20 05:33:48,155 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-11-20 05:33:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:33:48,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:48,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:48,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:33:48,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238162, now seen corresponding path program 1 times [2021-11-20 05:33:48,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:48,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310892307] [2021-11-20 05:33:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:48,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:48,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:48,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310892307] [2021-11-20 05:33:48,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310892307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:48,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:48,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:33:48,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113106713] [2021-11-20 05:33:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:48,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:48,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:48,231 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:48,351 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-11-20 05:33:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:48,351 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:33:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:48,353 INFO L225 Difference]: With dead ends: 88 [2021-11-20 05:33:48,353 INFO L226 Difference]: Without dead ends: 88 [2021-11-20 05:33:48,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:33:48,355 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 45 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-20 05:33:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-11-20 05:33:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-11-20 05:33:48,365 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 7 [2021-11-20 05:33:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:48,365 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-11-20 05:33:48,366 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-11-20 05:33:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:33:48,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:48,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:48,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:33:48,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash -502587362, now seen corresponding path program 1 times [2021-11-20 05:33:48,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:48,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338105985] [2021-11-20 05:33:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:48,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:48,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:48,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338105985] [2021-11-20 05:33:48,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338105985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:48,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:48,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:48,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919314639] [2021-11-20 05:33:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:48,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:48,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:48,449 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:48,682 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-11-20 05:33:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:33:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:48,685 INFO L225 Difference]: With dead ends: 116 [2021-11-20 05:33:48,685 INFO L226 Difference]: Without dead ends: 116 [2021-11-20 05:33:48,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:33:48,687 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 76 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:48,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 171 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:33:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-20 05:33:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2021-11-20 05:33:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-11-20 05:33:48,696 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 15 [2021-11-20 05:33:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:48,697 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-11-20 05:33:48,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-11-20 05:33:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:33:48,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:48,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:48,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:33:48,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash 761251652, now seen corresponding path program 1 times [2021-11-20 05:33:48,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:48,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877685049] [2021-11-20 05:33:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:48,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:48,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877685049] [2021-11-20 05:33:48,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877685049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:48,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:48,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:33:48,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058717362] [2021-11-20 05:33:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:48,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:48,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:48,838 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:49,055 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2021-11-20 05:33:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:49,056 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:33:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:49,057 INFO L225 Difference]: With dead ends: 105 [2021-11-20 05:33:49,057 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 05:33:49,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:49,059 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:49,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 151 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:33:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 05:33:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2021-11-20 05:33:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 82 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-11-20 05:33:49,067 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2021-11-20 05:33:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:49,068 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-11-20 05:33:49,068 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-11-20 05:33:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:33:49,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:49,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:49,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:33:49,070 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash 761251653, now seen corresponding path program 1 times [2021-11-20 05:33:49,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:49,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023373289] [2021-11-20 05:33:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:49,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:49,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023373289] [2021-11-20 05:33:49,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023373289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:49,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:49,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:33:49,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438699638] [2021-11-20 05:33:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:49,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:49,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:49,163 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:49,435 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-11-20 05:33:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:33:49,436 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:33:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:49,437 INFO L225 Difference]: With dead ends: 106 [2021-11-20 05:33:49,437 INFO L226 Difference]: Without dead ends: 106 [2021-11-20 05:33:49,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:49,439 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 61 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:49,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 186 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:33:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-20 05:33:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2021-11-20 05:33:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-11-20 05:33:49,446 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2021-11-20 05:33:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:49,447 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-11-20 05:33:49,447 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-11-20 05:33:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:33:49,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:49,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:49,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:33:49,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1997748640, now seen corresponding path program 1 times [2021-11-20 05:33:49,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:49,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297095444] [2021-11-20 05:33:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:49,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:49,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:49,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297095444] [2021-11-20 05:33:49,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297095444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:49,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:49,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:49,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841346842] [2021-11-20 05:33:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:49,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:49,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:49,512 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:49,649 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-11-20 05:33:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:49,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 05:33:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:49,651 INFO L225 Difference]: With dead ends: 118 [2021-11-20 05:33:49,651 INFO L226 Difference]: Without dead ends: 118 [2021-11-20 05:33:49,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:33:49,653 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:49,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 162 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-20 05:33:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2021-11-20 05:33:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-11-20 05:33:49,660 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 17 [2021-11-20 05:33:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:49,661 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-11-20 05:33:49,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-11-20 05:33:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:33:49,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:49,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:33:49,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1997696085, now seen corresponding path program 1 times [2021-11-20 05:33:49,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5727489] [2021-11-20 05:33:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:49,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:49,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:49,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5727489] [2021-11-20 05:33:49,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5727489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:49,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:49,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:33:49,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264046292] [2021-11-20 05:33:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:49,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:49,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:49,722 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:49,856 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-11-20 05:33:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:33:49,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 05:33:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:49,858 INFO L225 Difference]: With dead ends: 101 [2021-11-20 05:33:49,858 INFO L226 Difference]: Without dead ends: 101 [2021-11-20 05:33:49,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:33:49,860 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 46 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:49,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 152 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-20 05:33:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2021-11-20 05:33:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.380952380952381) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-11-20 05:33:49,866 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2021-11-20 05:33:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:49,867 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-11-20 05:33:49,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-11-20 05:33:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:33:49,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:49,868 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:49,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:33:49,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456982, now seen corresponding path program 1 times [2021-11-20 05:33:49,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:49,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662602075] [2021-11-20 05:33:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:49,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:49,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:49,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662602075] [2021-11-20 05:33:49,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662602075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:49,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:49,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:33:49,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367697599] [2021-11-20 05:33:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:49,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:49,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:49,923 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:50,081 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-11-20 05:33:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:33:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 05:33:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:50,083 INFO L225 Difference]: With dead ends: 84 [2021-11-20 05:33:50,083 INFO L226 Difference]: Without dead ends: 84 [2021-11-20 05:33:50,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:50,085 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:50,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 122 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-20 05:33:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-11-20 05:33:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-11-20 05:33:50,099 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2021-11-20 05:33:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:50,100 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-11-20 05:33:50,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-11-20 05:33:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:33:50,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:50,101 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:50,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:33:50,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456983, now seen corresponding path program 1 times [2021-11-20 05:33:50,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:50,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219503225] [2021-11-20 05:33:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:50,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:50,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219503225] [2021-11-20 05:33:50,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219503225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:50,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:50,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:33:50,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808708290] [2021-11-20 05:33:50,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:50,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:50,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:50,223 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:50,420 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-20 05:33:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:33:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 05:33:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:50,421 INFO L225 Difference]: With dead ends: 81 [2021-11-20 05:33:50,421 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 05:33:50,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:50,423 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:50,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:33:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 05:33:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2021-11-20 05:33:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.309090909090909) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-11-20 05:33:50,427 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 17 [2021-11-20 05:33:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:50,428 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-11-20 05:33:50,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-11-20 05:33:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:33:50,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:50,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:50,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:33:50,429 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1800660604, now seen corresponding path program 1 times [2021-11-20 05:33:50,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:50,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831414170] [2021-11-20 05:33:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:50,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:33:50,441 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:33:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:33:50,467 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:33:50,467 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:33:50,468 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2021-11-20 05:33:50,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (24 of 26 remaining) [2021-11-20 05:33:50,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (23 of 26 remaining) [2021-11-20 05:33:50,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (22 of 26 remaining) [2021-11-20 05:33:50,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (21 of 26 remaining) [2021-11-20 05:33:50,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (20 of 26 remaining) [2021-11-20 05:33:50,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (19 of 26 remaining) [2021-11-20 05:33:50,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (18 of 26 remaining) [2021-11-20 05:33:50,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (17 of 26 remaining) [2021-11-20 05:33:50,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (16 of 26 remaining) [2021-11-20 05:33:50,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (15 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (14 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (13 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (12 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (11 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (10 of 26 remaining) [2021-11-20 05:33:50,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (9 of 26 remaining) [2021-11-20 05:33:50,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (8 of 26 remaining) [2021-11-20 05:33:50,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (7 of 26 remaining) [2021-11-20 05:33:50,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (6 of 26 remaining) [2021-11-20 05:33:50,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (5 of 26 remaining) [2021-11-20 05:33:50,474 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (4 of 26 remaining) [2021-11-20 05:33:50,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (3 of 26 remaining) [2021-11-20 05:33:50,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (2 of 26 remaining) [2021-11-20 05:33:50,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (1 of 26 remaining) [2021-11-20 05:33:50,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2021-11-20 05:33:50,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:33:50,479 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:50,482 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:33:50,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:33:50 BoogieIcfgContainer [2021-11-20 05:33:50,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:33:50,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:33:50,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:33:50,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:33:50,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:47" (3/4) ... [2021-11-20 05:33:50,510 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:33:50,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:33:50,510 INFO L158 Benchmark]: Toolchain (without parser) took 3983.93ms. Allocated memory was 79.7MB in the beginning and 127.9MB in the end (delta: 48.2MB). Free memory was 41.8MB in the beginning and 73.5MB in the end (delta: -31.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-11-20 05:33:50,511 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.6MB in the end (delta: 157.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:50,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.74ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 41.5MB in the beginning and 79.4MB in the end (delta: -37.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-20 05:33:50,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.11ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:33:50,512 INFO L158 Benchmark]: Boogie Preprocessor took 30.40ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:50,512 INFO L158 Benchmark]: RCFGBuilder took 519.62ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 61.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 05:33:50,513 INFO L158 Benchmark]: TraceAbstraction took 2920.82ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 73.8MB in the end (delta: -12.8MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-20 05:33:50,513 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 127.9MB. Free memory was 73.8MB in the beginning and 73.5MB in the end (delta: 300.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:50,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.6MB in the end (delta: 157.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.74ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 41.5MB in the beginning and 79.4MB in the end (delta: -37.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.11ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.40ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 519.62ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 61.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2920.82ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 73.8MB in the end (delta: -12.8MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 127.9MB. Free memory was 73.8MB in the beginning and 73.5MB in the end (delta: 300.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, p={-1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: 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: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: 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: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: 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: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 696 mSDsluCounter, 1176 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 376 mSDtfsCounter, 1141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=4, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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 [2021-11-20 05:33:50,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF --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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:33:53,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:33:53,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:33:53,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:33:53,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:33:53,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:33:53,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:33:53,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:33:53,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:33:53,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:33:53,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:33:53,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:33:53,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:33:53,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:33:53,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:33:53,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:33:53,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:33:53,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:33:53,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:33:53,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:33:53,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:33:53,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:33:53,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:33:53,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:33:53,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:33:53,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:33:53,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:33:53,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:33:53,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:33:53,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:33:53,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:33:53,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:33:53,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:33:53,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:33:53,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:33:53,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:33:53,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:33:53,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:33:53,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:33:53,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:33:53,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:33:53,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:33:53,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:33:53,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:33:53,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:33:53,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:33:53,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:33:53,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:33:53,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:33:53,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:33:53,219 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:33:53,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:33:53,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:33:53,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:33:53,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:33:53,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:33:53,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:33:53,220 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:33:53,221 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:33:53,221 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:33:53,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:33:53,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:33:53,222 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:33:53,222 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:33:53,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:33:53,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:33:53,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:33:53,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:33:53,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:33:53,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:53,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:33:53,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:33:53,224 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:33:53,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:33:53,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:33:53,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:33:53,225 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2021-11-20 05:33:53,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:33:53,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:33:53,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:33:53,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:33:53,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:33:53,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-properties/list-1.i [2021-11-20 05:33:53,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/7efac0879/a40f9c00aae944e5a41bbe60bec11cba/FLAG324307e30 [2021-11-20 05:33:54,493 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:33:54,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i [2021-11-20 05:33:54,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/7efac0879/a40f9c00aae944e5a41bbe60bec11cba/FLAG324307e30 [2021-11-20 05:33:54,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/data/7efac0879/a40f9c00aae944e5a41bbe60bec11cba [2021-11-20 05:33:54,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:33:54,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:33:54,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:54,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:33:54,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:33:54,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:54" (1/1) ... [2021-11-20 05:33:54,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f99c381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:54, skipping insertion in model container [2021-11-20 05:33:54,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:54" (1/1) ... [2021-11-20 05:33:54,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:33:54,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:33:55,149 WARN L230 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-11-20 05:33:55,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:55,171 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:33:55,233 WARN L230 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_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-11-20 05:33:55,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:55,285 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:33:55,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55 WrapperNode [2021-11-20 05:33:55,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:55,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:55,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:33:55,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:33:55,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,369 INFO L137 Inliner]: procedures = 127, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-11-20 05:33:55,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:55,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:33:55,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:33:55,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:33:55,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:33:55,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:33:55,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:33:55,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:33:55,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (1/1) ... [2021-11-20 05:33:55,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:55,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:33:55,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:33:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-20 05:33:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-20 05:33:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:33:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:33:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:33:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:33:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:33:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:33:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:33:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:33:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:33:55,676 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:33:55,678 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:33:55,746 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-20 05:33:56,123 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:33:56,137 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:33:56,137 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 05:33:56,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:56 BoogieIcfgContainer [2021-11-20 05:33:56,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:33:56,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:33:56,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:33:56,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:33:56,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:33:54" (1/3) ... [2021-11-20 05:33:56,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e7393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:56, skipping insertion in model container [2021-11-20 05:33:56,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:55" (2/3) ... [2021-11-20 05:33:56,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e7393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:56, skipping insertion in model container [2021-11-20 05:33:56,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:56" (3/3) ... [2021-11-20 05:33:56,164 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2021-11-20 05:33:56,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:33:56,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-20 05:33:56,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:33:56,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:33:56,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-20 05:33:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:33:56,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:56,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:33:56,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:56,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516551, now seen corresponding path program 1 times [2021-11-20 05:33:56,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:33:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897677682] [2021-11-20 05:33:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:56,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:33:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:33:56,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:33:56,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:33:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:33:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:56,475 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 [2021-11-20 05:33:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:56,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:56,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:33:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897677682] [2021-11-20 05:33:56,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897677682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:56,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:56,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:33:56,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830034723] [2021-11-20 05:33:56,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:56,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:33:56,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:33:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:33:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:33:56,586 INFO L87 Difference]: Start difference. First operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:56,895 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-11-20 05:33:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:33:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 05:33:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:56,905 INFO L225 Difference]: With dead ends: 71 [2021-11-20 05:33:56,905 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 05:33:56,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:33:56,911 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:56,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 36 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:33:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 05:33:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2021-11-20 05:33:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.725) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-11-20 05:33:56,964 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 6 [2021-11-20 05:33:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:56,964 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-11-20 05:33:56,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-11-20 05:33:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:33:56,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:56,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:33:56,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:33:57,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:33:57,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516552, now seen corresponding path program 1 times [2021-11-20 05:33:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:33:57,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190323425] [2021-11-20 05:33:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:57,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:33:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:33:57,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:33:57,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:33:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:33:57,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:57,265 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 [2021-11-20 05:33:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:57,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:57,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:33:57,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190323425] [2021-11-20 05:33:57,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190323425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:57,549 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:57,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:33:57,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354153217] [2021-11-20 05:33:57,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:57,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:57,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:33:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:57,552 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:58,049 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-11-20 05:33:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:33:58,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 05:33:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:58,053 INFO L225 Difference]: With dead ends: 83 [2021-11-20 05:33:58,053 INFO L226 Difference]: Without dead ends: 83 [2021-11-20 05:33:58,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:33:58,055 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:58,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 47 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:33:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-20 05:33:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2021-11-20 05:33:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 53 states have (on average 1.471698113207547) internal successors, (78), 70 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2021-11-20 05:33:58,076 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 6 [2021-11-20 05:33:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:58,078 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2021-11-20 05:33:58,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2021-11-20 05:33:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:33:58,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:58,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:58,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:58,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:33:58,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 423224549, now seen corresponding path program 1 times [2021-11-20 05:33:58,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:33:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525487912] [2021-11-20 05:33:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:58,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:33:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:33:58,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:33:58,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:33:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:58,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:33:58,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:58,414 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 [2021-11-20 05:33:58,455 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 [2021-11-20 05:33:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:58,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:58,533 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 16 treesize of output 12 [2021-11-20 05:33:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:58,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:33:58,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525487912] [2021-11-20 05:33:58,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525487912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:58,566 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:58,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 05:33:58,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657591762] [2021-11-20 05:33:58,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:58,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:33:58,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:33:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:33:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:58,569 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:59,219 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2021-11-20 05:33:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:33:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:33:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:59,221 INFO L225 Difference]: With dead ends: 149 [2021-11-20 05:33:59,221 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 05:33:59,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:33:59,224 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 183 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:59,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 223 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:33:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 05:33:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2021-11-20 05:33:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-11-20 05:33:59,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 13 [2021-11-20 05:33:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:59,234 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-11-20 05:33:59,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:33:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-11-20 05:33:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:33:59,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:59,236 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:59,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:59,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:33:59,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:33:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769667, now seen corresponding path program 1 times [2021-11-20 05:33:59,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:33:59,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998625903] [2021-11-20 05:33:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:59,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:33:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:33:59,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:33:59,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:33:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:59,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:33:59,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:59,528 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 [2021-11-20 05:33:59,556 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 22 treesize of output 18 [2021-11-20 05:33:59,580 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 [2021-11-20 05:33:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:59,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:33:59,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:33:59,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998625903] [2021-11-20 05:33:59,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998625903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:59,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:59,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:33:59,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418421925] [2021-11-20 05:33:59,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:59,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:59,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:33:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:59,684 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:00,154 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2021-11-20 05:34:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:34:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:34:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:00,156 INFO L225 Difference]: With dead ends: 101 [2021-11-20 05:34:00,156 INFO L226 Difference]: Without dead ends: 101 [2021-11-20 05:34:00,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:34:00,157 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 81 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:00,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 131 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:34:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-20 05:34:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2021-11-20 05:34:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 78 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2021-11-20 05:34:00,165 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 13 [2021-11-20 05:34:00,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:00,166 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2021-11-20 05:34:00,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2021-11-20 05:34:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:34:00,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:00,168 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:00,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:00,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:00,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769666, now seen corresponding path program 1 times [2021-11-20 05:34:00,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:00,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024104927] [2021-11-20 05:34:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:00,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:00,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:00,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:00,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:34:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:34:00,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:00,457 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 [2021-11-20 05:34:00,500 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 [2021-11-20 05:34:00,509 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 [2021-11-20 05:34:00,553 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 [2021-11-20 05:34:00,571 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 [2021-11-20 05:34:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:00,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:00,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:34:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024104927] [2021-11-20 05:34:00,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024104927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:00,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:00,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 05:34:00,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067943948] [2021-11-20 05:34:00,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:00,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:34:00,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:34:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:34:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:34:00,953 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:02,267 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-11-20 05:34:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:34:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:34:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:02,269 INFO L225 Difference]: With dead ends: 103 [2021-11-20 05:34:02,269 INFO L226 Difference]: Without dead ends: 103 [2021-11-20 05:34:02,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:34:02,271 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 116 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:02,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 236 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 05:34:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-20 05:34:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2021-11-20 05:34:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-11-20 05:34:02,280 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 13 [2021-11-20 05:34:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:02,280 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-11-20 05:34:02,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-11-20 05:34:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 05:34:02,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:02,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:02,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:02,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:02,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash 916718725, now seen corresponding path program 1 times [2021-11-20 05:34:02,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:02,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991127557] [2021-11-20 05:34:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:02,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:02,503 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:02,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:34:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:02,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:34:02,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:02,570 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 [2021-11-20 05:34:02,589 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 22 treesize of output 18 [2021-11-20 05:34:02,607 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 [2021-11-20 05:34:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:02,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:02,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:34:02,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991127557] [2021-11-20 05:34:02,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991127557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:02,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:02,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:34:02,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329835298] [2021-11-20 05:34:02,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:02,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:34:02,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:34:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:34:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:34:02,682 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:03,035 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-11-20 05:34:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:34:03,036 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 05:34:03,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:03,037 INFO L225 Difference]: With dead ends: 95 [2021-11-20 05:34:03,037 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 05:34:03,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:34:03,038 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 74 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:03,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 123 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:34:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 05:34:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2021-11-20 05:34:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.360655737704918) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-11-20 05:34:03,047 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 14 [2021-11-20 05:34:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:03,047 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-11-20 05:34:03,048 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-11-20 05:34:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 05:34:03,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:03,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:03,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:03,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:03,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash 916718726, now seen corresponding path program 1 times [2021-11-20 05:34:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104276276] [2021-11-20 05:34:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:03,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:03,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:03,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:34:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:34:03,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:03,324 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 [2021-11-20 05:34:03,357 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 [2021-11-20 05:34:03,365 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 [2021-11-20 05:34:03,407 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 [2021-11-20 05:34:03,415 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 [2021-11-20 05:34:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:03,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:03,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:34:03,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104276276] [2021-11-20 05:34:03,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104276276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:03,782 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:03,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 05:34:03,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664640490] [2021-11-20 05:34:03,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:03,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:34:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:34:03,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:34:03,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:34:03,783 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:04,775 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-11-20 05:34:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:34:04,776 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 05:34:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:04,777 INFO L225 Difference]: With dead ends: 93 [2021-11-20 05:34:04,777 INFO L226 Difference]: Without dead ends: 93 [2021-11-20 05:34:04,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:34:04,778 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:04,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:34:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-20 05:34:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61. [2021-11-20 05:34:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-20 05:34:04,785 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 14 [2021-11-20 05:34:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:04,786 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-20 05:34:04,786 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-20 05:34:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:34:04,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:04,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:04,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:05,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:05,010 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1350732505, now seen corresponding path program 1 times [2021-11-20 05:34:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186724156] [2021-11-20 05:34:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:05,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:05,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:05,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:34:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:34:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:05,100 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 [2021-11-20 05:34:05,141 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 [2021-11-20 05:34:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:05,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:05,186 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 21 [2021-11-20 05:34:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:05,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:34:05,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186724156] [2021-11-20 05:34:05,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186724156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:05,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:05,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:34:05,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654146189] [2021-11-20 05:34:05,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:05,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:34:05,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:34:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:34:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:34:05,221 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:05,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:05,569 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2021-11-20 05:34:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:34:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:34:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:05,571 INFO L225 Difference]: With dead ends: 103 [2021-11-20 05:34:05,571 INFO L226 Difference]: Without dead ends: 103 [2021-11-20 05:34:05,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:34:05,572 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 65 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:05,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 131 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:34:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-20 05:34:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 69. [2021-11-20 05:34:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.278688524590164) internal successors, (78), 68 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2021-11-20 05:34:05,580 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 15 [2021-11-20 05:34:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:05,580 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2021-11-20 05:34:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2021-11-20 05:34:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:34:05,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:05,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:05,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:05,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:05,794 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1350679950, now seen corresponding path program 1 times [2021-11-20 05:34:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:05,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452071997] [2021-11-20 05:34:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:05,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:05,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:05,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:34:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:05,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:34:05,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:05,887 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 [2021-11-20 05:34:05,920 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 [2021-11-20 05:34:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:05,996 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 16 treesize of output 12 [2021-11-20 05:34:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:34:06,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:34:06,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452071997] [2021-11-20 05:34:06,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452071997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:06,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:06,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 05:34:06,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939229865] [2021-11-20 05:34:06,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:34:06,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:34:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:34:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:34:06,031 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:06,540 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2021-11-20 05:34:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:34:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:34:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:06,542 INFO L225 Difference]: With dead ends: 131 [2021-11-20 05:34:06,542 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 05:34:06,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:34:06,543 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 113 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:06,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 216 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:34:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 05:34:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2021-11-20 05:34:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 82 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-11-20 05:34:06,550 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2021-11-20 05:34:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:06,550 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-11-20 05:34:06,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:34:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-11-20 05:34:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:34:06,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:06,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:06,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:06,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:06,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-11-20 05:34:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1076970395, now seen corresponding path program 1 times [2021-11-20 05:34:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:34:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170228317] [2021-11-20 05:34:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:06,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:34:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:34:06,766 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:34:06,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:34:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:34:06,816 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:34:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:34:06,863 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 05:34:06,863 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:34:06,864 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2021-11-20 05:34:06,866 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (24 of 26 remaining) [2021-11-20 05:34:06,866 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (23 of 26 remaining) [2021-11-20 05:34:06,866 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (22 of 26 remaining) [2021-11-20 05:34:06,866 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (21 of 26 remaining) [2021-11-20 05:34:06,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (20 of 26 remaining) [2021-11-20 05:34:06,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (19 of 26 remaining) [2021-11-20 05:34:06,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (18 of 26 remaining) [2021-11-20 05:34:06,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (17 of 26 remaining) [2021-11-20 05:34:06,867 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (16 of 26 remaining) [2021-11-20 05:34:06,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (15 of 26 remaining) [2021-11-20 05:34:06,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (14 of 26 remaining) [2021-11-20 05:34:06,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (13 of 26 remaining) [2021-11-20 05:34:06,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (12 of 26 remaining) [2021-11-20 05:34:06,868 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (11 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (10 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (9 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (8 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (7 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (6 of 26 remaining) [2021-11-20 05:34:06,869 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (5 of 26 remaining) [2021-11-20 05:34:06,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (4 of 26 remaining) [2021-11-20 05:34:06,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (3 of 26 remaining) [2021-11-20 05:34:06,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (2 of 26 remaining) [2021-11-20 05:34:06,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (1 of 26 remaining) [2021-11-20 05:34:06,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2021-11-20 05:34:06,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:07,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:34:07,074 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:07,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:34:07,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:34:07 BoogieIcfgContainer [2021-11-20 05:34:07,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:34:07,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:34:07,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:34:07,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:34:07,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:56" (3/4) ... [2021-11-20 05:34:07,101 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:34:07,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:34:07,102 INFO L158 Benchmark]: Toolchain (without parser) took 12339.77ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 57.9MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,102 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:34:07,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.52ms. Allocated memory is still 77.6MB. Free memory was 57.6MB in the beginning and 53.2MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.98ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,103 INFO L158 Benchmark]: Boogie Preprocessor took 68.64ms. Allocated memory is still 77.6MB. Free memory was 51.1MB in the beginning and 49.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,104 INFO L158 Benchmark]: RCFGBuilder took 710.86ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 58.6MB in the end (delta: -9.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,104 INFO L158 Benchmark]: TraceAbstraction took 10944.89ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 58.2MB in the beginning and 55.9MB in the end (delta: 2.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,105 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 94.4MB. Free memory was 55.9MB in the beginning and 55.0MB in the end (delta: 864.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:34:07,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.52ms. Allocated memory is still 77.6MB. Free memory was 57.6MB in the beginning and 53.2MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.98ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.64ms. Allocated memory is still 77.6MB. Free memory was 51.1MB in the beginning and 49.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 710.86ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 58.6MB in the end (delta: -9.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10944.89ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 58.2MB in the beginning and 55.9MB in the end (delta: 2.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 94.4MB. Free memory was 55.9MB in the beginning and 55.0MB in the end (delta: 864.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={6:0}] [L534] List t; [L535] List p = a; VAL [a={6:0}, p={6:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={6:0}, p={6:0}] [L551] p = a VAL [a={6:0}, p={6:0}] [L552] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={6:0}, p={6:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: 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: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: 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: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: 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: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 67 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 928 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 928 mSDsluCounter, 1351 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1005 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1468 IncrementalHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 346 mSDtfsCounter, 1468 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=9, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 275 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 47 NumberOfNonLiveVariables, 429 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 16/16 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 [2021-11-20 05:34:07,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d501ea9-8ed1-49ad-ad5e-f9bf3b2e0e5c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample