./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:49:17,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:49:17,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:49:17,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:49:17,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:49:17,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:49:17,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:49:17,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:49:17,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:49:17,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:49:17,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:49:17,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:49:17,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:49:17,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:49:17,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:49:17,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:49:17,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:49:17,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:49:17,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:49:17,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:49:17,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:49:17,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:49:17,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:49:17,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:49:17,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:49:17,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:49:17,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:49:17,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:49:17,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:49:17,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:49:17,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:49:17,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:49:17,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:49:17,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:49:17,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:49:17,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:49:17,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:49:17,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:49:17,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:49:17,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:49:17,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:49:17,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:49:17,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:49:17,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:49:17,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:49:17,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:49:17,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:49:17,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:49:17,237 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:49:17,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:49:17,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:49:17,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:49:17,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:49:17,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:49:17,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:49:17,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:49:17,240 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:49:17,240 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:49:17,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:49:17,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:49:17,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:49:17,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:49:17,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:49:17,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:49:17,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:49:17,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:17,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:49:17,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:49:17,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:49:17,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:49:17,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:49:17,245 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_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-10-28 09:49:17,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:49:17,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:49:17,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:49:17,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:49:17,544 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:49:17,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 09:49:17,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/683989906/11a0ba69437c4646bb3eb85702cd1a1e/FLAG3a3b29700 [2021-10-28 09:49:18,154 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:49:18,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 09:49:18,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/683989906/11a0ba69437c4646bb3eb85702cd1a1e/FLAG3a3b29700 [2021-10-28 09:49:18,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/683989906/11a0ba69437c4646bb3eb85702cd1a1e [2021-10-28 09:49:18,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:49:18,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:49:18,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:18,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:49:18,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:49:18,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:18,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f8e3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18, skipping insertion in model container [2021-10-28 09:49:18,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:18,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:49:18,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:49:18,846 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 09:49:18,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:18,860 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:49:18,923 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 09:49:18,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:18,970 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:49:18,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18 WrapperNode [2021-10-28 09:49:18,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:18,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:49:18,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:49:18,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:49:18,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:18,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:49:19,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:49:19,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:49:19,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:49:19,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (1/1) ... [2021-10-28 09:49:19,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:49:19,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:49:19,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:49:19,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:49:19,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:49:19,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:49:19,116 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 09:49:19,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:49:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:49:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:49:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:49:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:49:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:49:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:49:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:49:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:49:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:49:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:49:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:49:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:49:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:49:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:49:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:49:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:49:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:49:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:49:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:49:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:49:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:49:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:49:19,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:49:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:49:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:49:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:49:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:49:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:49:19,390 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 09:49:19,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:49:19,792 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:49:19,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:19 BoogieIcfgContainer [2021-10-28 09:49:19,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:49:19,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:49:19,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:49:19,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:49:19,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:49:18" (1/3) ... [2021-10-28 09:49:19,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328e64ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:19, skipping insertion in model container [2021-10-28 09:49:19,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:18" (2/3) ... [2021-10-28 09:49:19,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328e64ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:19, skipping insertion in model container [2021-10-28 09:49:19,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:19" (3/3) ... [2021-10-28 09:49:19,808 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-10-28 09:49:19,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:49:19,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 09:49:19,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:49:19,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:49:19,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 09:49:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:49:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:49:19,950 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:19,951 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:19,952 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-10-28 09:49:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:19,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851191849] [2021-10-28 09:49:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:19,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:20,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:20,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851191849] [2021-10-28 09:49:20,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851191849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:20,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:20,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:49:20,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185687346] [2021-10-28 09:49:20,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:49:20,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:20,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:49:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:49:20,319 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:20,521 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-10-28 09:49:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:49:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:49:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:20,530 INFO L225 Difference]: With dead ends: 98 [2021-10-28 09:49:20,531 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 09:49:20,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:49:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 09:49:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-28 09:49:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-28 09:49:20,571 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-10-28 09:49:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:20,572 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-28 09:49:20,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-28 09:49:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:49:20,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:20,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:20,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:49:20,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-10-28 09:49:20,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:20,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038938695] [2021-10-28 09:49:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:20,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:20,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:20,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038938695] [2021-10-28 09:49:20,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038938695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:20,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:20,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:49:20,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858171243] [2021-10-28 09:49:20,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:49:20,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:49:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:49:20,684 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:20,952 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-10-28 09:49:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:49:20,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:49:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:20,959 INFO L225 Difference]: With dead ends: 111 [2021-10-28 09:49:20,959 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:49:20,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:49:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-10-28 09:49:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-10-28 09:49:20,982 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-10-28 09:49:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:20,984 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-10-28 09:49:20,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-10-28 09:49:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:49:20,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:20,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:20,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:49:20,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-10-28 09:49:20,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:20,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785620550] [2021-10-28 09:49:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:20,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:21,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:21,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785620550] [2021-10-28 09:49:21,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785620550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:21,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:21,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:49:21,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40934429] [2021-10-28 09:49:21,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:49:21,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:49:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:49:21,180 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:21,426 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-10-28 09:49:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:49:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:49:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:21,431 INFO L225 Difference]: With dead ends: 128 [2021-10-28 09:49:21,432 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 09:49:21,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 09:49:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-10-28 09:49:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-10-28 09:49:21,456 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-10-28 09:49:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:21,456 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-10-28 09:49:21,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-10-28 09:49:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:49:21,458 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:21,459 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:21,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:49:21,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:21,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-10-28 09:49:21,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:21,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438044293] [2021-10-28 09:49:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:21,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:21,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:21,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438044293] [2021-10-28 09:49:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438044293] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:21,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:21,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:21,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599003629] [2021-10-28 09:49:21,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:21,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:21,611 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:22,001 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-28 09:49:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:49:22,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 09:49:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:22,003 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:49:22,003 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:49:22,004 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:49:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:49:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-10-28 09:49:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-10-28 09:49:22,012 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-10-28 09:49:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:22,013 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-10-28 09:49:22,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-10-28 09:49:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:49:22,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:22,015 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:22,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:49:22,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-10-28 09:49:22,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:22,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795347034] [2021-10-28 09:49:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:22,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:22,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:22,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795347034] [2021-10-28 09:49:22,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795347034] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:22,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:22,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:22,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776780648] [2021-10-28 09:49:22,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:22,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:22,235 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:22,678 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-10-28 09:49:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:49:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 09:49:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:22,680 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:49:22,680 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 09:49:22,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:49:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 09:49:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-10-28 09:49:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-28 09:49:22,687 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-10-28 09:49:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-28 09:49:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-28 09:49:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:49:22,688 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:22,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:22,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:49:22,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-10-28 09:49:22,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:22,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454708986] [2021-10-28 09:49:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:22,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:22,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:22,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454708986] [2021-10-28 09:49:22,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454708986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:22,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:22,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:49:22,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623099819] [2021-10-28 09:49:22,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:49:22,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:49:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:49:22,880 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:23,159 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-10-28 09:49:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:49:23,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 09:49:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:23,161 INFO L225 Difference]: With dead ends: 191 [2021-10-28 09:49:23,162 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:49:23,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:49:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:49:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-10-28 09:49:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-10-28 09:49:23,168 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-10-28 09:49:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:23,169 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-10-28 09:49:23,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-10-28 09:49:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:49:23,170 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:23,170 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:23,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:49:23,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-10-28 09:49:23,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:23,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18425248] [2021-10-28 09:49:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:23,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:23,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:23,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18425248] [2021-10-28 09:49:23,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18425248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:23,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:23,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:23,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283278467] [2021-10-28 09:49:23,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:23,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:23,243 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:23,537 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-10-28 09:49:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:49:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 09:49:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:23,538 INFO L225 Difference]: With dead ends: 138 [2021-10-28 09:49:23,539 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:49:23,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:49:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:49:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-10-28 09:49:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-28 09:49:23,545 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-10-28 09:49:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:23,545 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 09:49:23,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-10-28 09:49:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:49:23,547 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:23,547 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:23,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:49:23,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:23,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-10-28 09:49:23,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:23,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807454547] [2021-10-28 09:49:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:23,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:49:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:23,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:23,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807454547] [2021-10-28 09:49:23,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807454547] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:23,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:23,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:49:23,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931849307] [2021-10-28 09:49:23,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:49:23,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:49:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:49:23,689 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:24,053 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-10-28 09:49:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:49:24,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 09:49:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:24,054 INFO L225 Difference]: With dead ends: 136 [2021-10-28 09:49:24,055 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 09:49:24,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:49:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 09:49:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-10-28 09:49:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-10-28 09:49:24,068 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-10-28 09:49:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-10-28 09:49:24,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-10-28 09:49:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:49:24,072 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:24,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:24,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:49:24,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-10-28 09:49:24,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:24,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920105654] [2021-10-28 09:49:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:24,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:24,101 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:49:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:24,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:49:24,164 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:49:24,165 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:49:24,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:49:24,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:49:24,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:49:24,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:49:24,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:49:24,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:49:24,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:49:24,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:49:24,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:49:24,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:49:24,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:49:24,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:49:24,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:49:24,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:49:24,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:49:24,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:49:24,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:49:24,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:49:24,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:49:24,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:49:24,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:49:24,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:49:24,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:49:24,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:49:24,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:49:24,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:49:24,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:49:24,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:49:24,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:49:24,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:49:24,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:24,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:49:24,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:49:24,187 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:24,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:49:24,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:49:24 BoogieIcfgContainer [2021-10-28 09:49:24,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:49:24,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:49:24,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:49:24,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:49:24,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:19" (3/4) ... [2021-10-28 09:49:24,248 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:49:24,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:49:24,250 INFO L168 Benchmark]: Toolchain (without parser) took 5760.38 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 67.1 MB in the beginning and 72.8 MB in the end (delta: -5.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:24,250 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:24,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.95 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.1 MB in the beginning and 89.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:24,254 INFO L168 Benchmark]: Boogie Preprocessor took 63.87 ms. Allocated memory is still 121.6 MB. Free memory was 89.1 MB in the beginning and 86.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:24,257 INFO L168 Benchmark]: RCFGBuilder took 758.50 ms. Allocated memory is still 121.6 MB. Free memory was 86.3 MB in the beginning and 61.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:24,258 INFO L168 Benchmark]: TraceAbstraction took 4444.95 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 60.5 MB in the beginning and 73.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:24,259 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 146.8 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:24,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.95 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.1 MB in the beginning and 89.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.87 ms. Allocated memory is still 121.6 MB. Free memory was 89.1 MB in the beginning and 86.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 758.50 ms. Allocated memory is still 121.6 MB. Free memory was 86.3 MB in the beginning and 61.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4444.95 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 60.5 MB in the beginning and 73.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.07 ms. Allocated memory is still 146.8 MB. Free memory was 73.9 MB in the beginning and 72.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - 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: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: 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: 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: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 578 SDtfs, 865 SDslu, 1008 SDs, 0 SdLazy, 2288 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:49:24,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:49:26,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:49:26,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:49:26,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:49:26,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:49:26,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:49:26,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:49:26,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:49:26,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:49:26,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:49:26,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:49:26,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:49:26,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:49:26,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:49:26,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:49:26,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:49:26,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:49:26,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:49:26,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:49:26,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:49:26,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:49:26,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:49:26,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:49:26,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:49:26,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:49:26,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:49:26,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:49:26,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:49:26,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:49:26,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:49:26,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:49:26,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:49:26,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:49:26,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:49:26,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:49:26,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:49:26,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:49:26,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:49:26,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:49:26,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:49:26,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:49:26,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:49:26,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:49:26,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:49:26,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:49:26,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:49:26,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:49:26,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:49:26,992 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:49:26,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:49:26,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:49:26,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:49:26,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:49:26,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:49:26,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:49:26,994 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:49:26,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:49:26,995 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:49:26,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:49:26,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:49:26,996 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:49:26,996 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:49:26,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:49:26,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:49:26,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:49:26,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:49:26,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:49:26,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:26,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:49:26,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:49:26,998 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:49:26,998 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:49:26,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:49:26,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:49:26,999 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_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-10-28 09:49:27,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:49:27,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:49:27,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:49:27,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:49:27,437 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:49:27,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 09:49:27,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/710016755/f84bc371e1c44181b38973c25d3c9dbf/FLAG748b4f33a [2021-10-28 09:49:28,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:49:28,156 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 09:49:28,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/710016755/f84bc371e1c44181b38973c25d3c9dbf/FLAG748b4f33a [2021-10-28 09:49:28,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/data/710016755/f84bc371e1c44181b38973c25d3c9dbf [2021-10-28 09:49:28,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:49:28,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:49:28,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:28,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:49:28,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:49:28,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:28" (1/1) ... [2021-10-28 09:49:28,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41880a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:28, skipping insertion in model container [2021-10-28 09:49:28,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:49:28" (1/1) ... [2021-10-28 09:49:28,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:49:28,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:49:28,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 09:49:28,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:28,927 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:49:29,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 09:49:29,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:49:29,048 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:49:29,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29 WrapperNode [2021-10-28 09:49:29,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:49:29,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:49:29,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:49:29,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:49:29,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:49:29,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:49:29,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:49:29,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:49:29,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (1/1) ... [2021-10-28 09:49:29,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:49:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:49:29,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:49:29,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:49:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:49:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:49:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:49:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:49:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:49:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:49:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:49:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:49:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:49:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 09:49:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:49:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:49:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:49:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 09:49:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:49:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:49:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:49:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:49:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:49:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:49:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:49:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:49:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:49:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:49:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:49:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:49:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:49:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:49:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:49:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:49:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:49:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:49:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:49:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:49:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:49:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:49:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:49:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:49:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:49:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:49:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:49:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:49:29,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:49:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:49:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:49:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:49:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:49:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:49:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:49:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:49:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:49:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:49:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:49:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:49:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:49:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:49:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:49:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:49:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:49:29,257 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:49:29,257 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:49:29,257 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:49:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:49:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:49:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:49:29,261 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:49:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:49:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:49:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:49:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:49:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:49:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:49:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:49:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:49:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:49:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 09:49:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:49:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:49:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:49:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:49:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:49:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:49:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:49:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:49:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:49:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:49:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:49:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:49:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:49:29,664 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 09:49:30,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:49:30,187 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:49:30,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:30 BoogieIcfgContainer [2021-10-28 09:49:30,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:49:30,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:49:30,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:49:30,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:49:30,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:49:28" (1/3) ... [2021-10-28 09:49:30,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317a23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:30, skipping insertion in model container [2021-10-28 09:49:30,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:49:29" (2/3) ... [2021-10-28 09:49:30,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317a23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:30, skipping insertion in model container [2021-10-28 09:49:30,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:30" (3/3) ... [2021-10-28 09:49:30,201 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-10-28 09:49:30,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:49:30,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 09:49:30,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:49:30,274 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:49:30,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 09:49:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:49:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:49:30,308 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:30,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:30,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-10-28 09:49:30,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:30,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723074298] [2021-10-28 09:49:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:30,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:30,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:30,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:49:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:30,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:49:30,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:30,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:30,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:30,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723074298] [2021-10-28 09:49:30,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723074298] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:30,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:30,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:49:30,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155788412] [2021-10-28 09:49:30,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:49:30,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:49:30,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:49:30,804 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:31,249 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-28 09:49:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:49:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:49:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:31,260 INFO L225 Difference]: With dead ends: 111 [2021-10-28 09:49:31,260 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 09:49:31,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:49:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 09:49:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-10-28 09:49:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-10-28 09:49:31,326 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-10-28 09:49:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:31,327 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-10-28 09:49:31,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-10-28 09:49:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:49:31,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:31,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:31,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:31,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:31,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-10-28 09:49:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:31,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128186238] [2021-10-28 09:49:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:31,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:31,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:31,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:31,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:49:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:31,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:49:31,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:31,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:31,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:31,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:31,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128186238] [2021-10-28 09:49:31,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128186238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:31,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:31,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:49:31,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083562622] [2021-10-28 09:49:31,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:31,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:31,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:31,927 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:32,617 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 09:49:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:49:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:49:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:32,620 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:49:32,620 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:49:32,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:49:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:49:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-10-28 09:49:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-10-28 09:49:32,631 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-10-28 09:49:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:32,631 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-10-28 09:49:32,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-10-28 09:49:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:49:32,633 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:32,633 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:32,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:32,845 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-10-28 09:49:32,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:32,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919918054] [2021-10-28 09:49:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:32,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:32,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:32,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:49:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:33,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:49:33,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:33,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:33,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 09:49:33,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 09:49:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:33,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:33,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:33,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919918054] [2021-10-28 09:49:33,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919918054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:33,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:33,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:49:33,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108911947] [2021-10-28 09:49:33,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:33,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:33,339 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:33,927 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-10-28 09:49:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:49:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:49:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:33,929 INFO L225 Difference]: With dead ends: 140 [2021-10-28 09:49:33,930 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 09:49:33,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:49:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 09:49:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-10-28 09:49:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-10-28 09:49:33,939 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-10-28 09:49:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:33,939 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-10-28 09:49:33,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-10-28 09:49:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:49:33,940 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:33,940 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:33,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:34,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:34,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-10-28 09:49:34,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:34,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679695505] [2021-10-28 09:49:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:34,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:34,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:34,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:49:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:49:34,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:34,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:34,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:49:34,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 09:49:34,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 09:49:34,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 09:49:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:34,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:34,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:34,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679695505] [2021-10-28 09:49:34,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679695505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:34,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:34,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:49:34,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491409367] [2021-10-28 09:49:34,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:49:34,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:49:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:49:34,904 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:36,479 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-28 09:49:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:49:36,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:49:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:36,482 INFO L225 Difference]: With dead ends: 145 [2021-10-28 09:49:36,482 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 09:49:36,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:49:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 09:49:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-10-28 09:49:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-28 09:49:36,491 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-10-28 09:49:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:36,491 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-28 09:49:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-28 09:49:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:49:36,493 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:36,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:36,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:36,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:36,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-10-28 09:49:36,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:36,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359839158] [2021-10-28 09:49:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:36,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:36,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:36,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:36,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:49:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:36,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:49:36,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:36,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 09:49:37,045 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-28 09:49:37,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-28 09:49:37,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 09:49:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:37,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 140 [2021-10-28 09:49:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:37,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:37,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359839158] [2021-10-28 09:49:37,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359839158] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:37,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:37,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 09:49:37,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302081473] [2021-10-28 09:49:37,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:49:37,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:49:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:49:37,367 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:38,124 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-10-28 09:49:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:49:38,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:49:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:38,127 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:49:38,127 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 09:49:38,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:49:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 09:49:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-10-28 09:49:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-10-28 09:49:38,162 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-10-28 09:49:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:38,162 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-10-28 09:49:38,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-10-28 09:49:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:49:38,164 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:38,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:38,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:38,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:38,365 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-10-28 09:49:38,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:38,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557844941] [2021-10-28 09:49:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:38,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:38,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:38,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:38,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:49:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:38,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:49:38,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:38,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:38,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 09:49:38,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:49:38,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 09:49:38,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 09:49:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:38,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:39,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:39,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557844941] [2021-10-28 09:49:39,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557844941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:39,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:39,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:49:39,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896028082] [2021-10-28 09:49:39,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:49:39,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:49:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:49:39,106 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:40,612 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-10-28 09:49:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:49:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:49:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:40,615 INFO L225 Difference]: With dead ends: 124 [2021-10-28 09:49:40,615 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 09:49:40,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:49:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 09:49:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-10-28 09:49:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-28 09:49:40,621 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-10-28 09:49:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:40,621 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-28 09:49:40,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-28 09:49:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:49:40,622 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:40,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:40,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:40,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:40,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:40,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-10-28 09:49:40,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:40,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371876775] [2021-10-28 09:49:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:40,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:40,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:40,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:40,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:49:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:41,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:49:41,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:41,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:41,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 09:49:41,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 09:49:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:41,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:41,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:41,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371876775] [2021-10-28 09:49:41,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371876775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:41,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:41,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:49:41,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51916435] [2021-10-28 09:49:41,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:49:41,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:49:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:49:41,219 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:41,659 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-10-28 09:49:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:49:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:49:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:41,660 INFO L225 Difference]: With dead ends: 113 [2021-10-28 09:49:41,661 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 09:49:41,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:49:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 09:49:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-10-28 09:49:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-10-28 09:49:41,666 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-10-28 09:49:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:41,666 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-10-28 09:49:41,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:49:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-10-28 09:49:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:49:41,668 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:41,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:41,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:41,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:41,882 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 09:49:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-10-28 09:49:41,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:41,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634529614] [2021-10-28 09:49:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:41,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:41,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:41,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:49:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:42,088 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:49:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:42,185 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:49:42,185 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:49:42,186 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:49:42,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:49:42,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:49:42,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:49:42,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:49:42,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:49:42,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:49:42,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:49:42,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:49:42,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:49:42,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:42,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:42,404 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:42,407 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:49:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:49:42 BoogieIcfgContainer [2021-10-28 09:49:42,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:49:42,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:49:42,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:49:42,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:49:42,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:30" (3/4) ... [2021-10-28 09:49:42,435 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:49:42,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:49:42,436 INFO L168 Benchmark]: Toolchain (without parser) took 14017.74 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 30.3 MB in the beginning and 32.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:42,436 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:42,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.81 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 30.1 MB in the beginning and 46.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:42,437 INFO L168 Benchmark]: Boogie Preprocessor took 84.90 ms. Allocated memory is still 71.3 MB. Free memory was 46.5 MB in the beginning and 43.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:42,438 INFO L168 Benchmark]: RCFGBuilder took 1054.79 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 48.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:42,438 INFO L168 Benchmark]: TraceAbstraction took 12236.13 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.2 MB in the beginning and 32.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:42,439 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 86.0 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:42,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 627.81 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 30.1 MB in the beginning and 46.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.90 ms. Allocated memory is still 71.3 MB. Free memory was 46.5 MB in the beginning and 43.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1054.79 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 48.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12236.13 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.2 MB in the beginning and 32.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 86.0 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={1:0}, i=0, p={1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L560] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - 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: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: 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: 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: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 1052 SDslu, 1045 SDs, 0 SdLazy, 1679 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:49:42,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfe18e9-bc06-44bc-a660-96e8d5d3dc28/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...