./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:50:01,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:50:01,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:50:01,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:50:01,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:50:01,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:50:01,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:50:01,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:50:01,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:50:01,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:50:01,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:50:01,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:50:01,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:50:01,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:50:01,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:50:01,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:50:01,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:50:01,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:50:01,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:50:01,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:50:01,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:50:01,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:50:01,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:50:01,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:50:01,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:50:01,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:50:01,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:50:01,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:50:01,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:50:01,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:50:01,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:50:01,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:50:01,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:50:01,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:50:01,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:50:01,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:50:01,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:50:01,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:50:01,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:50:01,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:50:01,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:50:01,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:50:01,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:50:01,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:50:01,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:50:01,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:50:01,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:50:01,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:50:01,320 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:50:01,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:50:01,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:50:01,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:50:01,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:50:01,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:50:01,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:50:01,323 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:50:01,323 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:50:01,323 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:50:01,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:50:01,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:50:01,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:50:01,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:50:01,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:50:01,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:50:01,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:50:01,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:50:01,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:50:01,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:50:01,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:50:01,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:50:01,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:50:01,329 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-28 09:50:01,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:50:01,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:50:01,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:50:01,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:50:01,636 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:50:01,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 09:50:01,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/15bc44dcf/ccefcf963e7f4027b735fbb1ea117f01/FLAGd3f7a13a7 [2021-10-28 09:50:02,229 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:50:02,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 09:50:02,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/15bc44dcf/ccefcf963e7f4027b735fbb1ea117f01/FLAGd3f7a13a7 [2021-10-28 09:50:02,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/15bc44dcf/ccefcf963e7f4027b735fbb1ea117f01 [2021-10-28 09:50:02,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:50:02,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:50:02,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:50:02,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:50:02,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:50:02,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:50:02" (1/1) ... [2021-10-28 09:50:02,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e87514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:02, skipping insertion in model container [2021-10-28 09:50:02,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:50:02" (1/1) ... [2021-10-28 09:50:02,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:50:02,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:50:02,965 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 09:50:02,970 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 09:50:02,973 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 09:50:02,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:50:02,995 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:50:03,043 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 09:50:03,044 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 09:50:03,046 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 09:50:03,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:50:03,083 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:50:03,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03 WrapperNode [2021-10-28 09:50:03,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:50:03,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:50:03,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:50:03,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:50:03,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:50:03,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:50:03,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:50:03,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:50:03,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (1/1) ... [2021-10-28 09:50:03,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:50:03,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:50:03,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:50:03,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:50:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:50:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:50:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:50:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:50:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:50:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:50:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:50:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:50:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:50:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:50:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:50:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:50:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:50:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:50:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:50:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:50:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:50:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:50:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:50:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:50:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:50:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:50:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:50:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:50:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:50:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:50:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:50:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:50:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:50:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:50:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:50:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:50:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:50:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:50:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:50:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:50:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:50:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:50:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:50:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:50:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:50:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:50:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:50:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:50:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:50:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:50:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:50:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:50:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:50:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:50:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:50:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:50:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:50:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:50:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:50:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:50:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:50:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:50:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:50:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:50:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:50:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:50:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:50:03,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:50:03,909 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:50:03,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:03 BoogieIcfgContainer [2021-10-28 09:50:03,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:50:03,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:50:03,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:50:03,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:50:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:50:02" (1/3) ... [2021-10-28 09:50:03,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721721b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:50:03, skipping insertion in model container [2021-10-28 09:50:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:03" (2/3) ... [2021-10-28 09:50:03,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721721b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:50:03, skipping insertion in model container [2021-10-28 09:50:03,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:03" (3/3) ... [2021-10-28 09:50:03,920 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-28 09:50:03,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:50:03,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-28 09:50:03,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:50:03,971 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 09:50:03,972 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-28 09:50:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:50:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:50:03,998 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:03,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:03,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240052, now seen corresponding path program 1 times [2021-10-28 09:50:04,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:04,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158721633] [2021-10-28 09:50:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:04,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:04,234 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 09:50:04,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:04,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158721633] [2021-10-28 09:50:04,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158721633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:04,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:04,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:50:04,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223801981] [2021-10-28 09:50:04,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:50:04,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:50:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:04,259 INFO L87 Difference]: Start difference. First operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:04,593 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-10-28 09:50:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:50:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:50:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:04,612 INFO L225 Difference]: With dead ends: 143 [2021-10-28 09:50:04,612 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 09:50:04,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 09:50:04,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-10-28 09:50:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 131 states have internal predecessors, (139), 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 09:50:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-10-28 09:50:04,679 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 7 [2021-10-28 09:50:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:04,679 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-10-28 09:50:04,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-10-28 09:50:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:50:04,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:04,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:04,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:50:04,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240051, now seen corresponding path program 1 times [2021-10-28 09:50:04,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:04,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425658810] [2021-10-28 09:50:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:04,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:04,817 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 09:50:04,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:04,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425658810] [2021-10-28 09:50:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425658810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:04,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:04,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:50:04,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355671720] [2021-10-28 09:50:04,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:50:04,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:50:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:04,822 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:05,087 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-10-28 09:50:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:50:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:50:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:05,092 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:50:05,092 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:50:05,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:50:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2021-10-28 09:50:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 135 states have internal predecessors, (143), 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 09:50:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2021-10-28 09:50:05,140 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 7 [2021-10-28 09:50:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:05,140 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2021-10-28 09:50:05,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2021-10-28 09:50:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:50:05,141 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:05,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:05,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:50:05,142 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 152402486, now seen corresponding path program 1 times [2021-10-28 09:50:05,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:05,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868299136] [2021-10-28 09:50:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:05,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:05,272 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 09:50:05,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:05,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868299136] [2021-10-28 09:50:05,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868299136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:05,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:05,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:50:05,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411058666] [2021-10-28 09:50:05,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:50:05,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:50:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:05,275 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 09:50:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:05,620 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2021-10-28 09:50:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:50:05,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-10-28 09:50:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:05,622 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:50:05,622 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 09:50:05,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:50:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 09:50:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2021-10-28 09:50:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 150 states have internal predecessors, (171), 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 09:50:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-10-28 09:50:05,630 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 13 [2021-10-28 09:50:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:05,631 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-10-28 09:50:05,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 09:50:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-10-28 09:50:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:50:05,631 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:05,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:05,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:50:05,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 152402485, now seen corresponding path program 1 times [2021-10-28 09:50:05,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:05,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128666502] [2021-10-28 09:50:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:05,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:05,715 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 09:50:05,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:05,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128666502] [2021-10-28 09:50:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128666502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:05,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:05,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:50:05,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153321936] [2021-10-28 09:50:05,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:50:05,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:50:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:05,717 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 09:50:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:05,984 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-10-28 09:50:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:50:05,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-10-28 09:50:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:05,986 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:50:05,986 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:50:05,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:50:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:50:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-10-28 09:50:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 138 states have internal predecessors, (153), 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 09:50:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2021-10-28 09:50:06,005 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 13 [2021-10-28 09:50:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:06,006 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2021-10-28 09:50:06,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 09:50:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2021-10-28 09:50:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:50:06,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:06,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:06,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:50:06,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash 429896239, now seen corresponding path program 1 times [2021-10-28 09:50:06,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:06,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212505340] [2021-10-28 09:50:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:06,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,122 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 09:50:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:06,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212505340] [2021-10-28 09:50:06,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212505340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:06,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:06,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:50:06,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272864150] [2021-10-28 09:50:06,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:50:06,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:50:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:06,127 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:06,342 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-10-28 09:50:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:50:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 09:50:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:06,345 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:50:06,345 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 09:50:06,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:50:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 09:50:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2021-10-28 09:50:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.5360824742268042) internal successors, (149), 136 states have internal predecessors, (149), 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 09:50:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2021-10-28 09:50:06,353 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2021-10-28 09:50:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:06,353 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2021-10-28 09:50:06,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2021-10-28 09:50:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:50:06,354 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:06,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:06,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:50:06,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:06,355 INFO L85 PathProgramCache]: Analyzing trace with hash 442001777, now seen corresponding path program 1 times [2021-10-28 09:50:06,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:06,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354012222] [2021-10-28 09:50:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:06,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,432 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 09:50:06,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:06,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354012222] [2021-10-28 09:50:06,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354012222] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:06,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:06,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:50:06,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283353389] [2021-10-28 09:50:06,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:50:06,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:50:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:50:06,437 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:06,686 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-10-28 09:50:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:50:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:50:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:06,688 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:50:06,688 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 09:50:06,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:50:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 09:50:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-28 09:50:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 135 states have internal predecessors, (147), 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 09:50:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-10-28 09:50:06,693 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 16 [2021-10-28 09:50:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:06,693 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-10-28 09:50:06,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-10-28 09:50:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:50:06,694 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:06,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:06,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:50:06,703 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:06,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash 442001778, now seen corresponding path program 1 times [2021-10-28 09:50:06,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:06,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377167924] [2021-10-28 09:50:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:06,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:06,811 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 09:50:06,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:06,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377167924] [2021-10-28 09:50:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377167924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:06,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:06,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:50:06,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301144583] [2021-10-28 09:50:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:50:06,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:50:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:50:06,814 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:07,070 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-10-28 09:50:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:50:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:50:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:07,071 INFO L225 Difference]: With dead ends: 138 [2021-10-28 09:50:07,071 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:50:07,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:50:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:50:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-28 09:50:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 134 states have internal predecessors, (145), 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 09:50:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-10-28 09:50:07,077 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 16 [2021-10-28 09:50:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:07,077 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-10-28 09:50:07,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-10-28 09:50:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:50:07,079 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:07,079 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 09:50:07,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:50:07,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -549611590, now seen corresponding path program 1 times [2021-10-28 09:50:07,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:07,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513839181] [2021-10-28 09:50:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:07,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:07,212 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 09:50:07,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:07,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513839181] [2021-10-28 09:50:07,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513839181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:07,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:07,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:50:07,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637871707] [2021-10-28 09:50:07,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:50:07,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:50:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:50:07,214 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 09:50:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:07,533 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2021-10-28 09:50:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:50:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-28 09:50:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:07,535 INFO L225 Difference]: With dead ends: 198 [2021-10-28 09:50:07,535 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 09:50:07,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:50:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 09:50:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2021-10-28 09:50:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 139 states have internal predecessors, (150), 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 09:50:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-10-28 09:50:07,540 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2021-10-28 09:50:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:07,540 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-10-28 09:50:07,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 09:50:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-10-28 09:50:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:50:07,541 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:07,541 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 09:50:07,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:50:07,542 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:07,542 INFO L85 PathProgramCache]: Analyzing trace with hash -63373389, now seen corresponding path program 1 times [2021-10-28 09:50:07,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:07,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416249184] [2021-10-28 09:50:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:07,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:07,683 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 09:50:07,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:07,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416249184] [2021-10-28 09:50:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416249184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:07,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:07,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:50:07,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302736768] [2021-10-28 09:50:07,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:50:07,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:50:07,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:50:07,696 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 09:50:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:08,102 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-10-28 09:50:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:50:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 20 [2021-10-28 09:50:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:08,103 INFO L225 Difference]: With dead ends: 143 [2021-10-28 09:50:08,103 INFO L226 Difference]: Without dead ends: 143 [2021-10-28 09:50:08,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:50:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-28 09:50:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-10-28 09:50:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 138 states have internal predecessors, (149), 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 09:50:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-10-28 09:50:08,108 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2021-10-28 09:50:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:08,108 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-10-28 09:50:08,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 09:50:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-10-28 09:50:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:50:08,109 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:08,109 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 09:50:08,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:50:08,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -63373388, now seen corresponding path program 1 times [2021-10-28 09:50:08,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:08,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016616931] [2021-10-28 09:50:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:08,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:50:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:08,295 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 09:50:08,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:08,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016616931] [2021-10-28 09:50:08,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016616931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:08,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:08,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:50:08,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710445285] [2021-10-28 09:50:08,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:50:08,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:50:08,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:50:08,306 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 09:50:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:08,944 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-10-28 09:50:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:50:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 20 [2021-10-28 09:50:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:08,946 INFO L225 Difference]: With dead ends: 147 [2021-10-28 09:50:08,946 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 09:50:08,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:50:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 09:50:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-10-28 09:50:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 134 states have internal predecessors, (146), 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 09:50:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-10-28 09:50:08,951 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 20 [2021-10-28 09:50:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:08,951 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-10-28 09:50:08,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 09:50:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-10-28 09:50:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:50:08,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:08,952 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 09:50:08,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:50:08,953 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -195087453, now seen corresponding path program 1 times [2021-10-28 09:50:08,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:08,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973402113] [2021-10-28 09:50:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:08,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:50:08,966 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:50:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:50:09,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:50:09,009 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:50:09,010 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:50:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:50:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:50:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:50:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:50:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:50:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:50:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:50:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:50:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:50:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:50:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:50:09,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:50:09,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:50:09,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:50:09,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:50:09,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:50:09,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:50:09,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:50:09,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:50:09,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:50:09,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:50:09,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 09:50:09,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 09:50:09,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-28 09:50:09,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 09:50:09,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 09:50:09,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 09:50:09,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-28 09:50:09,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:50:09,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 09:50:09,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 09:50:09,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 09:50:09,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:50:09,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:50:09,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:50:09,031 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:09,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:50:09,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:50:09 BoogieIcfgContainer [2021-10-28 09:50:09,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:50:09,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:50:09,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:50:09,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:50:09,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:03" (3/4) ... [2021-10-28 09:50:09,075 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:50:09,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:50:09,076 INFO L168 Benchmark]: Toolchain (without parser) took 6520.16 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 42.0 MB in the beginning and 64.7 MB in the end (delta: -22.6 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,077 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:50:09,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.32 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 41.8 MB in the beginning and 80.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,077 INFO L168 Benchmark]: Boogie Preprocessor took 103.61 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 76.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,078 INFO L168 Benchmark]: RCFGBuilder took 722.89 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 50.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,082 INFO L168 Benchmark]: TraceAbstraction took 5158.05 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 50.0 MB in the beginning and 65.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,082 INFO L168 Benchmark]: Witness Printer took 2.95 ms. Allocated memory is still 146.8 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:50:09,084 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 81.8 MB. Free memory is still 59.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 527.32 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 41.8 MB in the beginning and 80.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.61 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 76.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 722.89 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 50.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5158.05 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 50.0 MB in the beginning and 65.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.95 ms. Allocated memory is still 146.8 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 767 SDtfs, 1265 SDslu, 1106 SDs, 0 SdLazy, 3165 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 76, 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, 10 MinimizatonAttempts, 152 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:50:09,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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 09:50:11,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:50:11,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:50:11,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:50:11,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:50:11,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:50:11,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:50:11,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:50:11,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:50:11,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:50:11,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:50:11,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:50:11,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:50:11,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:50:11,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:50:11,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:50:11,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:50:11,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:50:11,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:50:11,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:50:11,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:50:11,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:50:11,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:50:11,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:50:11,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:50:11,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:50:11,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:50:11,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:50:11,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:50:11,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:50:11,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:50:11,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:50:11,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:50:11,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:50:11,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:50:11,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:50:11,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:50:11,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:50:11,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:50:11,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:50:11,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:50:11,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:50:11,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:50:11,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:50:11,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:50:11,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:50:11,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:50:11,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:50:11,767 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:50:11,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:50:11,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:50:11,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:50:11,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:50:11,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:50:11,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:50:11,770 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:50:11,770 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:50:11,770 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:50:11,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:50:11,770 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:50:11,771 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:50:11,771 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:50:11,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:50:11,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:50:11,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:50:11,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:50:11,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:50:11,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:50:11,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:50:11,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:50:11,773 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:50:11,773 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:50:11,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:50:11,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:50:11,774 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-28 09:50:12,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:50:12,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:50:12,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:50:12,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:50:12,232 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:50:12,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 09:50:12,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/84e62dbf3/7baf8eec95eb41188352ee9ed5b11ea4/FLAG57bbd65cf [2021-10-28 09:50:12,966 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:50:12,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 09:50:12,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/84e62dbf3/7baf8eec95eb41188352ee9ed5b11ea4/FLAG57bbd65cf [2021-10-28 09:50:13,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/data/84e62dbf3/7baf8eec95eb41188352ee9ed5b11ea4 [2021-10-28 09:50:13,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:50:13,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:50:13,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:50:13,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:50:13,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:50:13,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33042daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13, skipping insertion in model container [2021-10-28 09:50:13,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:50:13,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:50:13,704 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 09:50:13,708 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 09:50:13,712 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 09:50:13,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:50:13,735 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:50:13,787 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 09:50:13,788 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 09:50:13,790 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_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 09:50:13,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:50:13,834 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:50:13,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13 WrapperNode [2021-10-28 09:50:13,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:50:13,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:50:13,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:50:13,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:50:13,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:50:13,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:50:13,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:50:13,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:50:13,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (1/1) ... [2021-10-28 09:50:13,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:50:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:50:13,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:50:14,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:50:14,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:50:14,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:50:14,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:50:14,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:50:14,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:50:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:50:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:50:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:50:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:50:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:50:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:50:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:50:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:50:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:50:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:50:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:50:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:50:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:50:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:50:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:50:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:50:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:50:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:50:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:50:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:50:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:50:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:50:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:50:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:50:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:50:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:50:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:50:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:50:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:50:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:50:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:50:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:50:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:50:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:50:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:50:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:50:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:50:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:50:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:50:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:50:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:50:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:50:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:50:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:50:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:50:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:50:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:50:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:50:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:50:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:50:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:50:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:50:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:50:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:50:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:50:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:50:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:50:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:50:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:50:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:50:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:50:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:50:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:50:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:50:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:50:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:50:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:50:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:50:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:50:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:50:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:50:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:50:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:50:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:50:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:50:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:50:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:50:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:50:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:50:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:50:14,069 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:50:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:50:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:50:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:50:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:50:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:50:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:50:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:50:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:50:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:50:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:50:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:50:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:50:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:50:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:50:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:50:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:50:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:50:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:50:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:50:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:50:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:50:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:50:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:50:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:50:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:50:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:50:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:50:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:50:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:50:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:50:14,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:50:15,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:50:15,004 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:50:15,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:15 BoogieIcfgContainer [2021-10-28 09:50:15,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:50:15,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:50:15,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:50:15,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:50:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:50:13" (1/3) ... [2021-10-28 09:50:15,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df25041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:50:15, skipping insertion in model container [2021-10-28 09:50:15,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:50:13" (2/3) ... [2021-10-28 09:50:15,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df25041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:50:15, skipping insertion in model container [2021-10-28 09:50:15,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:15" (3/3) ... [2021-10-28 09:50:15,022 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-28 09:50:15,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:50:15,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-28 09:50:15,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:50:15,091 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 09:50:15,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-28 09:50:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:50:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:50:15,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:15,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:15,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash -486261088, now seen corresponding path program 1 times [2021-10-28 09:50:15,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:15,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586286003] [2021-10-28 09:50:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:15,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:15,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:15,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:15,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:50:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:15,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:50:15,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:15,444 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 09:50:15,457 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 09:50:15,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:15,504 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 09:50:15,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:15,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586286003] [2021-10-28 09:50:15,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586286003] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:15,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:50:15,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131545953] [2021-10-28 09:50:15,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:50:15,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:50:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:50:15,537 INFO L87 Difference]: Start difference. First operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:15,878 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-10-28 09:50:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:50:15,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:50:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:15,890 INFO L225 Difference]: With dead ends: 141 [2021-10-28 09:50:15,890 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 09:50:15,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:50:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 09:50:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-10-28 09:50:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.9027777777777777) internal successors, (137), 129 states have internal predecessors, (137), 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 09:50:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-10-28 09:50:15,936 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 7 [2021-10-28 09:50:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:15,936 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-10-28 09:50:15,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-10-28 09:50:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:50:15,937 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:15,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:16,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:16,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -486261087, now seen corresponding path program 1 times [2021-10-28 09:50:16,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:16,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14984791] [2021-10-28 09:50:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:16,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:16,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:16,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:50:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:16,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:50:16,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:16,336 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 09:50:16,352 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 09:50:16,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:16,428 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 09:50:16,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:16,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14984791] [2021-10-28 09:50:16,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14984791] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:16,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:16,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:50:16,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901726067] [2021-10-28 09:50:16,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:50:16,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:50:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:16,434 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:16,887 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-28 09:50:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:50:16,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:50:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:16,890 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:50:16,890 INFO L226 Difference]: Without dead ends: 150 [2021-10-28 09:50:16,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-28 09:50:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2021-10-28 09:50:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.7848101265822784) internal successors, (141), 133 states have internal predecessors, (141), 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 09:50:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2021-10-28 09:50:16,915 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 7 [2021-10-28 09:50:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:16,915 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2021-10-28 09:50:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2021-10-28 09:50:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:50:16,917 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:16,918 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:16,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:17,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:17,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877289, now seen corresponding path program 1 times [2021-10-28 09:50:17,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:17,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562300507] [2021-10-28 09:50:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:17,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:17,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:17,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:17,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:50:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:17,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:50:17,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:17,300 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 09:50:17,364 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:50:17,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-10-28 09:50:17,392 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 09:50:17,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:17,459 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 09:50:17,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:17,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562300507] [2021-10-28 09:50:17,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562300507] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:17,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:17,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:50:17,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890008915] [2021-10-28 09:50:17,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:50:17,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:50:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:17,463 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 09:50:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:17,905 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 09:50:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:50:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2021-10-28 09:50:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:17,907 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:50:17,908 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 09:50:17,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 09:50:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-10-28 09:50:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.6341463414634145) internal successors, (134), 123 states have internal predecessors, (134), 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 09:50:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-28 09:50:17,917 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 12 [2021-10-28 09:50:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:17,917 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-28 09:50:17,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 09:50:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-28 09:50:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:50:17,918 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:17,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:17,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:18,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:18,131 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877290, now seen corresponding path program 1 times [2021-10-28 09:50:18,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:18,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872338689] [2021-10-28 09:50:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:18,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:18,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:18,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:50:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:50:18,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:18,306 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 09:50:18,312 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 09:50:18,457 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:50:18,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-28 09:50:18,469 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:50:18,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-10-28 09:50:18,507 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 09:50:18,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:21,368 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 09:50:21,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:21,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872338689] [2021-10-28 09:50:21,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872338689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:21,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:21,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:50:21,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885311607] [2021-10-28 09:50:21,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:50:21,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:50:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-28 09:50:21,380 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 09:50:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:45,252 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-10-28 09:50:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:50:45,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 12 [2021-10-28 09:50:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:45,255 INFO L225 Difference]: With dead ends: 177 [2021-10-28 09:50:45,255 INFO L226 Difference]: Without dead ends: 177 [2021-10-28 09:50:45,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-28 09:50:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-28 09:50:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 122. [2021-10-28 09:50:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 118 states have internal predecessors, (129), 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 09:50:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-28 09:50:45,268 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 12 [2021-10-28 09:50:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:45,268 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-28 09:50:45,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 09:50:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-28 09:50:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:50:45,269 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:45,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:45,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:45,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:45,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -52407454, now seen corresponding path program 1 times [2021-10-28 09:50:45,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:45,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697750343] [2021-10-28 09:50:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:45,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:45,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:50:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:50:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:45,696 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 09:50:45,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:45,754 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 09:50:45,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:45,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697750343] [2021-10-28 09:50:45,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697750343] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:45,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:45,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:50:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615289231] [2021-10-28 09:50:45,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:50:45,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:50:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:50:45,763 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:50:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:46,124 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-10-28 09:50:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:50:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2021-10-28 09:50:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:46,127 INFO L225 Difference]: With dead ends: 148 [2021-10-28 09:50:46,127 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 09:50:46,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 09:50:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-10-28 09:50:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 116 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:50:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-10-28 09:50:46,140 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 14 [2021-10-28 09:50:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:46,140 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-10-28 09:50:46,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:50:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-10-28 09:50:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:50:46,141 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:46,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:46,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:46,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:46,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480014, now seen corresponding path program 1 times [2021-10-28 09:50:46,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:46,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510362763] [2021-10-28 09:50:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:46,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:46,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:46,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:50:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:46,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:50:46,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:46,549 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 09:50:46,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 09:50:46,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-28 09:50:46,643 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 09:50:46,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:46,730 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 09:50:46,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:46,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510362763] [2021-10-28 09:50:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510362763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:46,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:46,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:50:46,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511965098] [2021-10-28 09:50:46,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:50:46,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:50:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:46,733 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 09:50:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:47,344 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 09:50:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:50:47,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 09:50:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:47,346 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:50:47,346 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:50:47,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:50:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:50:47,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-28 09:50:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 115 states have internal predecessors, (124), 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 09:50:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-28 09:50:47,354 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 15 [2021-10-28 09:50:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:47,355 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-28 09:50:47,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 09:50:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-28 09:50:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:50:47,356 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:47,356 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:47,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-28 09:50:47,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:47,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480013, now seen corresponding path program 1 times [2021-10-28 09:50:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910984802] [2021-10-28 09:50:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:47,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:47,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:47,565 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:47,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:50:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:47,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:50:47,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:47,767 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 09:50:47,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 09:50:47,824 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 09:50:47,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-28 09:50:47,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-28 09:50:47,932 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 09:50:47,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:48,234 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 09:50:48,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:48,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910984802] [2021-10-28 09:50:48,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910984802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:48,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:48,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:50:48,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261563168] [2021-10-28 09:50:48,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:50:48,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:50:48,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:50:48,236 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 09:50:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:49,757 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-10-28 09:50:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:50:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 09:50:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:49,759 INFO L225 Difference]: With dead ends: 118 [2021-10-28 09:50:49,759 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 09:50:49,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:50:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 09:50:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-28 09:50:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 114 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 09:50:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2021-10-28 09:50:49,767 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 15 [2021-10-28 09:50:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:49,767 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2021-10-28 09:50:49,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 09:50:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2021-10-28 09:50:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:50:49,768 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:49,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:49,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:49,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:49,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2101662523, now seen corresponding path program 1 times [2021-10-28 09:50:49,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:49,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116128607] [2021-10-28 09:50:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:49,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:49,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:49,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:49,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:50:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:50,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:50:50,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:50,189 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 09:50:50,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 09:50:50,304 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 09:50:50,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:50,379 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 09:50:50,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:50,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116128607] [2021-10-28 09:50:50,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116128607] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:50,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:50,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:50:50,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289216873] [2021-10-28 09:50:50,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:50:50,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:50:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:50:50,381 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 09:50:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:50,967 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-10-28 09:50:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:50:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 09:50:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:50,969 INFO L225 Difference]: With dead ends: 179 [2021-10-28 09:50:50,970 INFO L226 Difference]: Without dead ends: 179 [2021-10-28 09:50:50,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:50:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-28 09:50:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 124. [2021-10-28 09:50:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 120 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 09:50:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-10-28 09:50:50,978 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 17 [2021-10-28 09:50:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:50,979 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-10-28 09:50:50,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 09:50:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-10-28 09:50:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:50:50,980 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:50,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:50,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:51,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:51,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -739626508, now seen corresponding path program 1 times [2021-10-28 09:50:51,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:51,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621745910] [2021-10-28 09:50:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:51,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:51,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:51,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:50:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:51,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:50:51,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:51,420 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 09:50:51,511 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 09:50:51,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-10-28 09:50:51,596 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 24 treesize of output 20 [2021-10-28 09:50:51,853 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:50:51,853 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-10-28 09:50:52,033 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:50:52,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-10-28 09:50:52,236 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 09:50:52,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:50:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:50:56,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:50:56,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621745910] [2021-10-28 09:50:56,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621745910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:50:56,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:50:56,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 09:50:56,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605870246] [2021-10-28 09:50:56,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:50:56,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:50:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:50:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-28 09:50:56,032 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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 09:50:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:58,828 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-10-28 09:50:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:50:58,829 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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 19 [2021-10-28 09:50:58,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:58,830 INFO L225 Difference]: With dead ends: 145 [2021-10-28 09:50:58,830 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 09:50:58,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=142, Invalid=363, Unknown=1, NotChecked=0, Total=506 [2021-10-28 09:50:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 09:50:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-10-28 09:50:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 119 states have internal predecessors, (129), 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 09:50:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-10-28 09:50:58,836 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 19 [2021-10-28 09:50:58,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:58,836 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-10-28 09:50:58,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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 09:50:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-10-28 09:50:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:50:58,837 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:58,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:50:58,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:59,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:50:59,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:50:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:59,039 INFO L85 PathProgramCache]: Analyzing trace with hash -739626507, now seen corresponding path program 1 times [2021-10-28 09:50:59,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:50:59,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220677545] [2021-10-28 09:50:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:59,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:50:59,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:50:59,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:50:59,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:50:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:59,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:50:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:59,299 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 09:50:59,375 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 09:50:59,404 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:50:59,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-28 09:50:59,457 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 21 treesize of output 17 [2021-10-28 09:50:59,477 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 09:50:59,691 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:50:59,692 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-28 09:50:59,732 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 09:50:59,733 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 59 treesize of output 54 [2021-10-28 09:50:59,922 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:50:59,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-10-28 09:50:59,932 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:50:59,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-10-28 09:51:00,043 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 09:51:00,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:51:09,660 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset))) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))) is different from false [2021-10-28 09:51:10,524 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 09:51:10,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:51:10,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220677545] [2021-10-28 09:51:10,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220677545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:10,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:10,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 09:51:10,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70603475] [2021-10-28 09:51:10,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:51:10,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:51:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:51:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=173, Unknown=2, NotChecked=26, Total=240 [2021-10-28 09:51:10,526 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 09:51:19,583 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_main_~end~0.offset)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (bvule .cse1 (select |c_#length| c_main_~end~0.base)) (= |c_main_#t~mem7.offset| (_ bv0 32)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (bvule c_main_~end~0.offset .cse1) (= (select |c_#length| |c_main_#t~mem7.base|) (_ bv12 32)) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) c_main_~end~0.offset)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse5) (_ bv12 32)) (not (= .cse5 c_main_~end~0.base)))) is different from false [2021-10-28 09:51:25,574 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-10-28 09:51:31,298 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse2) .cse3)) (= (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3) c_main_~end~0.offset)))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 09:51:37,930 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_main_~end~0.offset)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (bvule .cse1 (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (bvule c_main_~end~0.offset .cse1) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) c_main_~end~0.offset)))) (= (select |c_#length| .cse5) (_ bv12 32)) (not (= .cse5 c_main_~end~0.base)))) is different from false [2021-10-28 09:51:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:38,442 INFO L93 Difference]: Finished difference Result 181 states and 194 transitions. [2021-10-28 09:51:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-28 09:51:38,444 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 19 [2021-10-28 09:51:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:38,445 INFO L225 Difference]: With dead ends: 181 [2021-10-28 09:51:38,445 INFO L226 Difference]: Without dead ends: 181 [2021-10-28 09:51:38,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=279, Invalid=989, Unknown=8, NotChecked=284, Total=1560 [2021-10-28 09:51:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-28 09:51:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 120. [2021-10-28 09:51:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.4) internal successors, (126), 116 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:51:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2021-10-28 09:51:38,452 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 19 [2021-10-28 09:51:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:38,452 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2021-10-28 09:51:38,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 09:51:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2021-10-28 09:51:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:51:38,454 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:38,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:38,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:38,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:51:38,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 09:51:38,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1944702492, now seen corresponding path program 1 times [2021-10-28 09:51:38,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:51:38,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561357399] [2021-10-28 09:51:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:38,665 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:51:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:51:38,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:51:38,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:51:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:51:38,867 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:51:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:51:38,956 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:51:38,956 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:51:38,958 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:51:38,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:51:38,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:51:38,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:51:38,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:51:38,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:51:38,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:51:38,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:51:38,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:51:38,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:51:38,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:51:38,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:51:38,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:51:38,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:51:38,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:51:38,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:51:38,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:51:38,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:51:38,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:51:38,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:51:38,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:51:38,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:51:38,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:51:38,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:51:38,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:51:38,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:51:38,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:51:38,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:51:38,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:51:38,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:51:38,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:51:38,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:51:38,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:51:38,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:51:38,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:51:38,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 09:51:38,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:51:38,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:51:38,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:51:38,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:51:38,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:51:38,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 09:51:38,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 09:51:38,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 09:51:38,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-28 09:51:38,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 09:51:38,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 09:51:38,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 09:51:38,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-28 09:51:38,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:51:38,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:51:38,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 09:51:38,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 09:51:38,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 09:51:38,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 09:51:38,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:51:38,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:51:39,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:39,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:51:39,215 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:39,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:51:39,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:51:39 BoogieIcfgContainer [2021-10-28 09:51:39,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:51:39,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:51:39,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:51:39,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:51:39,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:50:15" (3/4) ... [2021-10-28 09:51:39,247 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:51:39,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:51:39,252 INFO L168 Benchmark]: Toolchain (without parser) took 85998.33 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 45.4 MB in the beginning and 30.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:39,253 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:51:39,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.89 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 41.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:39,254 INFO L168 Benchmark]: Boogie Preprocessor took 110.71 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 38.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:39,255 INFO L168 Benchmark]: RCFGBuilder took 1063.66 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 38.3 MB in the beginning and 48.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:39,257 INFO L168 Benchmark]: TraceAbstraction took 84230.49 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 47.7 MB in the beginning and 30.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:39,258 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 111.1 MB. Free memory is still 30.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:51:39,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 579.89 ms. Allocated memory is still 67.1 MB. Free memory was 45.1 MB in the beginning and 41.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 110.71 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 38.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1063.66 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 38.3 MB in the beginning and 48.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84230.49 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 47.7 MB in the beginning and 30.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.51 ms. Allocated memory is still 111.1 MB. Free memory is still 30.8 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: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={1:0}] [L1007] list->prev = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={1:0}, list={1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1041] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 150 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 84.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 58.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 744 SDtfs, 1400 SDslu, 1621 SDs, 0 SdLazy, 2709 SolverSat, 185 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 205 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 59.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, InterpolantAutomatonStates: 91, 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, 10 MinimizatonAttempts, 253 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 254 ConstructedInterpolants, 20 QuantifiedInterpolants, 2202 SizeOfPredicates, 45 NumberOfNonLiveVariables, 900 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:51:39,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777db73-fa3b-4a57-83f2-f3660dc3cdb4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...