./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:57:04,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:57:04,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:57:04,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:57:04,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:57:04,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:57:04,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:57:04,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:57:04,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:57:04,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:57:04,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:57:04,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:57:04,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:57:04,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:57:04,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:57:04,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:57:04,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:57:04,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:57:04,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:57:04,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:57:04,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:57:04,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:57:04,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:57:04,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:57:04,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:57:04,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:57:04,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:57:04,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:57:04,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:57:04,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:57:04,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:57:04,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:57:04,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:57:04,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:57:04,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:57:04,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:57:04,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:57:04,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:57:04,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:57:04,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:57:04,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:57:04,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:57:04,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:57:04,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:57:04,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:57:04,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:57:04,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:57:04,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:57:04,692 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:57:04,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:57:04,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:57:04,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:57:04,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:57:04,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:57:04,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:57:04,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:57:04,694 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:57:04,695 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:57:04,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:57:04,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:57:04,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:57:04,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:57:04,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:57:04,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:57:04,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:57:04,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:04,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:57:04,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:57:04,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:57:04,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:57:04,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:57:04,698 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-21 19:57:04,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:57:04,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:57:04,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:57:04,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:57:04,999 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:57:05,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-21 19:57:05,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/418597369/28adae4c3baf4615886db0aaf8fa9c2c/FLAG5ff19b333 [2021-10-21 19:57:05,733 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:57:05,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-21 19:57:05,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/418597369/28adae4c3baf4615886db0aaf8fa9c2c/FLAG5ff19b333 [2021-10-21 19:57:06,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/418597369/28adae4c3baf4615886db0aaf8fa9c2c [2021-10-21 19:57:06,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:57:06,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:57:06,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:06,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:57:06,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:57:06,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f5d674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06, skipping insertion in model container [2021-10-21 19:57:06,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:57:06,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:57:06,393 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-21 19:57:06,396 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-21 19:57:06,398 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-21 19:57:06,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:06,413 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:57:06,483 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-21 19:57:06,484 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-21 19:57:06,485 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-21 19:57:06,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:06,517 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:57:06,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06 WrapperNode [2021-10-21 19:57:06,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:06,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:57:06,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:57:06,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:57:06,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:57:06,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:57:06,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:57:06,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:57:06,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (1/1) ... [2021-10-21 19:57:06,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:06,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:06,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:57:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:57:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:57:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:57:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:57:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:57:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:57:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:57:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:57:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:57:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:57:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:57:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:57:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:57:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:57:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:57:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:57:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:57:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:57:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:57:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:57:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:57:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:57:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:57:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:57:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:57:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:57:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:57:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:57:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:57:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:57:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:57:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:57:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:57:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:57:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:57:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:57:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:57:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:57:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:57:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:57:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:57:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:57:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:57:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:57:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:57:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:57:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:57:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:57:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:57:07,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:57:07,433 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 19:57:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:07 BoogieIcfgContainer [2021-10-21 19:57:07,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:57:07,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:57:07,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:57:07,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:57:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:57:06" (1/3) ... [2021-10-21 19:57:07,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1925169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:07, skipping insertion in model container [2021-10-21 19:57:07,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:06" (2/3) ... [2021-10-21 19:57:07,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1925169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:07, skipping insertion in model container [2021-10-21 19:57:07,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:07" (3/3) ... [2021-10-21 19:57:07,473 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-21 19:57:07,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:57:07,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-21 19:57:07,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:57:07,579 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:57:07,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-21 19:57:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:57:07,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:07,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:07,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:07,621 INFO L82 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-10-21 19:57:07,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:07,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80860377] [2021-10-21 19:57:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:07,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:07,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:07,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80860377] [2021-10-21 19:57:07,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80860377] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:07,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:07,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:57:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850738094] [2021-10-21 19:57:07,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:57:07,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:57:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:07,874 INFO L87 Difference]: Start difference. First operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:08,136 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-21 19:57:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:57:08,138 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 [2021-10-21 19:57:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:08,149 INFO L225 Difference]: With dead ends: 127 [2021-10-21 19:57:08,149 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 19:57:08,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 19:57:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-10-21 19:57:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.835820895522388) internal successors, (123), 115 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-10-21 19:57:08,209 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-10-21 19:57:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:08,209 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-10-21 19:57:08,210 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) [2021-10-21 19:57:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-10-21 19:57:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:57:08,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:08,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:08,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:57:08,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-10-21 19:57:08,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:08,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710572515] [2021-10-21 19:57:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:08,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:08,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:08,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:08,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710572515] [2021-10-21 19:57:08,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710572515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:08,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:08,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:57:08,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18700005] [2021-10-21 19:57:08,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:57:08,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:57:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:08,357 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:08,634 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-10-21 19:57:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:57:08,634 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 [2021-10-21 19:57:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:08,641 INFO L225 Difference]: With dead ends: 137 [2021-10-21 19:57:08,641 INFO L226 Difference]: Without dead ends: 137 [2021-10-21 19:57:08,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-21 19:57:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-10-21 19:57:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 120 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-21 19:57:08,664 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-10-21 19:57:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:08,665 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-21 19:57:08,665 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) [2021-10-21 19:57:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-21 19:57:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:57:08,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:08,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:08,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:57:08,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-10-21 19:57:08,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:08,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216652223] [2021-10-21 19:57:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:08,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:08,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:08,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216652223] [2021-10-21 19:57:08,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216652223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:08,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:08,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:57:08,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925654102] [2021-10-21 19:57:08,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:57:08,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:57:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:08,804 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:09,052 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-10-21 19:57:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:57:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 19:57:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:09,054 INFO L225 Difference]: With dead ends: 131 [2021-10-21 19:57:09,055 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 19:57:09,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:57:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 19:57:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-10-21 19:57:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-21 19:57:09,073 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-10-21 19:57:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:09,074 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-21 19:57:09,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-21 19:57:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:57:09,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:09,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:09,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:57:09,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-10-21 19:57:09,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:09,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456430753] [2021-10-21 19:57:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:09,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:09,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:09,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456430753] [2021-10-21 19:57:09,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456430753] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:09,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:09,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:57:09,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608680546] [2021-10-21 19:57:09,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:57:09,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:09,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:57:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:09,281 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:09,565 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-10-21 19:57:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:57:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 19:57:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:09,567 INFO L225 Difference]: With dead ends: 155 [2021-10-21 19:57:09,567 INFO L226 Difference]: Without dead ends: 155 [2021-10-21 19:57:09,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:57:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-21 19:57:09,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-10-21 19:57:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 122 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-21 19:57:09,574 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-10-21 19:57:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:09,574 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-21 19:57:09,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-21 19:57:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:57:09,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:09,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:09,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:57:09,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-10-21 19:57:09,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:09,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992887360] [2021-10-21 19:57:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:09,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:09,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:09,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992887360] [2021-10-21 19:57:09,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992887360] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:09,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:09,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:57:09,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717972320] [2021-10-21 19:57:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:57:09,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:57:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:09,641 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:09,821 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-21 19:57:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:57:09,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 19:57:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:09,823 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:57:09,823 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 19:57:09,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:57:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 19:57:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-21 19:57:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-21 19:57:09,829 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-10-21 19:57:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:09,829 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-21 19:57:09,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-21 19:57:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:57:09,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:09,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:09,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:57:09,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-10-21 19:57:09,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:09,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476631841] [2021-10-21 19:57:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:09,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:09,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:09,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476631841] [2021-10-21 19:57:09,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476631841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:09,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:09,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:57:09,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186208726] [2021-10-21 19:57:09,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:57:09,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:57:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:09,963 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:10,229 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-10-21 19:57:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:57:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-21 19:57:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:10,231 INFO L225 Difference]: With dead ends: 125 [2021-10-21 19:57:10,231 INFO L226 Difference]: Without dead ends: 125 [2021-10-21 19:57:10,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:57:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-21 19:57:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-10-21 19:57:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-21 19:57:10,237 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-10-21 19:57:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:10,237 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-21 19:57:10,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-21 19:57:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:57:10,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:10,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:10,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:57:10,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-10-21 19:57:10,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:10,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593578084] [2021-10-21 19:57:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:10,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:10,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:10,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593578084] [2021-10-21 19:57:10,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593578084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:10,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:10,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:57:10,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151045820] [2021-10-21 19:57:10,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:57:10,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:10,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:57:10,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:10,366 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:10,671 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-21 19:57:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:57:10,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-21 19:57:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:10,673 INFO L225 Difference]: With dead ends: 125 [2021-10-21 19:57:10,673 INFO L226 Difference]: Without dead ends: 125 [2021-10-21 19:57:10,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:57:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-21 19:57:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-10-21 19:57:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-21 19:57:10,678 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-10-21 19:57:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:10,678 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-21 19:57:10,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-21 19:57:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:57:10,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:10,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:10,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:57:10,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-10-21 19:57:10,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:10,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624926032] [2021-10-21 19:57:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:10,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:10,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:10,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624926032] [2021-10-21 19:57:10,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624926032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:10,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:10,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:57:10,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62285432] [2021-10-21 19:57:10,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:57:10,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:57:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:10,794 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:11,046 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-10-21 19:57:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:57:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-21 19:57:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:11,048 INFO L225 Difference]: With dead ends: 181 [2021-10-21 19:57:11,048 INFO L226 Difference]: Without dead ends: 181 [2021-10-21 19:57:11,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:57:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-21 19:57:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-10-21 19:57:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 121 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-21 19:57:11,052 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-10-21 19:57:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:11,053 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-21 19:57:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-21 19:57:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:57:11,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:11,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:11,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:57:11,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-10-21 19:57:11,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:11,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860598595] [2021-10-21 19:57:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:11,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:11,068 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:11,104 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:11,104 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:57:11,105 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:57:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:57:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:57:11,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 19:57:11,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 19:57:11,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:11,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-21 19:57:11,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-21 19:57:11,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-21 19:57:11,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:11,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:11,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:57:11,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:57:11,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:57:11 BoogieIcfgContainer [2021-10-21 19:57:11,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:57:11,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:57:11,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:57:11,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:57:11,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:07" (3/4) ... [2021-10-21 19:57:11,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:57:11,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:57:11,169 INFO L168 Benchmark]: Toolchain (without parser) took 5152.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 50.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:11,171 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 68.1 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:11,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.57 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 64.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:11,173 INFO L168 Benchmark]: Boogie Preprocessor took 62.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 61.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:11,174 INFO L168 Benchmark]: RCFGBuilder took 852.65 ms. Allocated memory is still 94.4 MB. Free memory was 61.1 MB in the beginning and 36.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:11,174 INFO L168 Benchmark]: TraceAbstraction took 3723.19 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 36.0 MB in the beginning and 50.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:11,175 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 113.2 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:11,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 68.1 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 501.57 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 64.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 61.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 852.65 ms. Allocated memory is still 94.4 MB. Free memory was 61.1 MB in the beginning and 36.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3723.19 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 36.0 MB in the beginning and 50.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.40 ms. Allocated memory is still 113.2 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 3553.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 27.7ms, AutomataDifference: 2142.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1384.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 382.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.5ms SsaConstructionTime, 174.2ms SatisfiabilityAnalysisTime, 770.9ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:57:11,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:57:13,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:57:13,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:57:13,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:57:13,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:57:13,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:57:13,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:57:13,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:57:13,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:57:13,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:57:13,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:57:13,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:57:13,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:57:13,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:57:13,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:57:13,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:57:13,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:57:13,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:57:13,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:57:13,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:57:13,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:57:13,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:57:13,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:57:13,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:57:13,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:57:13,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:57:13,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:57:13,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:57:13,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:57:13,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:57:13,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:57:13,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:57:13,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:57:13,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:57:13,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:57:13,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:57:13,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:57:13,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:57:13,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:57:13,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:57:13,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:57:13,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:57:13,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:57:13,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:57:13,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:57:13,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:57:13,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:57:13,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:57:13,917 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:57:13,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:57:13,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:57:13,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:57:13,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:57:13,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:57:13,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:57:13,920 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:57:13,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:57:13,920 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:57:13,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:57:13,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:57:13,921 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:57:13,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:57:13,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:57:13,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:57:13,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:57:13,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:57:13,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:57:13,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:13,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:57:13,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:57:13,924 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:57:13,924 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:57:13,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:57:13,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:57:13,925 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-10-21 19:57:14,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:57:14,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:57:14,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:57:14,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:57:14,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:57:14,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-21 19:57:14,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/0fa73db35/811e9525220745b2bc8f6be52a1c37ca/FLAG159326b43 [2021-10-21 19:57:15,094 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:57:15,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-10-21 19:57:15,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/0fa73db35/811e9525220745b2bc8f6be52a1c37ca/FLAG159326b43 [2021-10-21 19:57:15,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/data/0fa73db35/811e9525220745b2bc8f6be52a1c37ca [2021-10-21 19:57:15,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:57:15,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:57:15,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:15,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:57:15,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:57:15,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77739d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15, skipping insertion in model container [2021-10-21 19:57:15,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:57:15,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:57:15,731 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-21 19:57:15,746 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-21 19:57:15,748 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-21 19:57:15,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:15,779 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:57:15,814 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-10-21 19:57:15,815 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-10-21 19:57:15,817 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_cd6cb5fb-8abf-4978-992d-4eb944399d5f/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-10-21 19:57:15,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:15,864 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:57:15,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15 WrapperNode [2021-10-21 19:57:15,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:15,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:57:15,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:57:15,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:57:15,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:57:15,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:57:15,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:57:15,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:57:15,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (1/1) ... [2021-10-21 19:57:15,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:15,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:15,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:16,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:57:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:57:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:57:16,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:57:16,055 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:57:16,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:57:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:57:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:57:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:57:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:57:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:57:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:57:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:57:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:57:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:57:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:57:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:57:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:57:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:57:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:57:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:57:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:57:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:57:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:57:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:57:16,065 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:57:16,065 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:57:16,065 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:57:16,065 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:57:16,066 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:57:16,066 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:57:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:57:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:57:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:57:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:57:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:57:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:57:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:57:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:57:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:57:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:57:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:57:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:57:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:57:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:57:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:57:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:57:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:57:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:57:16,074 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:57:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:57:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:57:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:57:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:57:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:57:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:57:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:57:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:57:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:57:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:57:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:57:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:57:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:57:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:57:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:57:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:57:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 19:57:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 19:57:16,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:57:16,963 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 19:57:16,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:16 BoogieIcfgContainer [2021-10-21 19:57:16,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:57:16,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:57:16,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:57:16,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:57:16,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:57:15" (1/3) ... [2021-10-21 19:57:16,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd41793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:16, skipping insertion in model container [2021-10-21 19:57:16,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:15" (2/3) ... [2021-10-21 19:57:16,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd41793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:16, skipping insertion in model container [2021-10-21 19:57:16,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:16" (3/3) ... [2021-10-21 19:57:16,974 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-10-21 19:57:16,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:57:16,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-10-21 19:57:17,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:57:17,033 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:57:17,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-10-21 19:57:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:57:17,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:17,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:17,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-10-21 19:57:17,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:17,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511084218] [2021-10-21 19:57:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:17,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:17,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:17,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:57:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:57:17,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:17,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:17,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:17,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:17,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511084218] [2021-10-21 19:57:17,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511084218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:17,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:17,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:57:17,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953264981] [2021-10-21 19:57:17,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:57:17,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:57:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:57:17,509 INFO L87 Difference]: Start difference. First operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:17,813 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-21 19:57:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:57:17,816 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 [2021-10-21 19:57:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:17,828 INFO L225 Difference]: With dead ends: 125 [2021-10-21 19:57:17,828 INFO L226 Difference]: Without dead ends: 121 [2021-10-21 19:57:17,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:57:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-21 19:57:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-21 19:57:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-10-21 19:57:17,887 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-10-21 19:57:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:17,888 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-10-21 19:57:17,888 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) [2021-10-21 19:57:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-10-21 19:57:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:57:17,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:17,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:17,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 19:57:18,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:18,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:18,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:18,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-10-21 19:57:18,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:18,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342955970] [2021-10-21 19:57:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:18,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:18,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:18,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:57:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:18,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:57:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:18,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:18,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:18,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:18,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342955970] [2021-10-21 19:57:18,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342955970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:18,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:18,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-21 19:57:18,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882673227] [2021-10-21 19:57:18,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:57:18,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:57:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:18,338 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:18,733 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-10-21 19:57:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:57:18,735 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 [2021-10-21 19:57:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:18,736 INFO L225 Difference]: With dead ends: 135 [2021-10-21 19:57:18,737 INFO L226 Difference]: Without dead ends: 135 [2021-10-21 19:57:18,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-21 19:57:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-10-21 19:57:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.75) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-10-21 19:57:18,763 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-10-21 19:57:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:18,763 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-10-21 19:57:18,764 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) [2021-10-21 19:57:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-10-21 19:57:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:57:18,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:18,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:18,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:18,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:18,976 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:18,977 INFO L82 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-10-21 19:57:18,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:18,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670705253] [2021-10-21 19:57:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:18,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:18,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:19,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:57:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:57:19,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:19,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:19,219 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 19:57:19,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-10-21 19:57:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:19,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:19,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:19,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670705253] [2021-10-21 19:57:19,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670705253] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:19,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:19,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 19:57:19,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672739312] [2021-10-21 19:57:19,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:57:19,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:57:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:19,309 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:19,687 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-21 19:57:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:57:19,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:57:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:19,689 INFO L225 Difference]: With dead ends: 129 [2021-10-21 19:57:19,689 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:57:19,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:57:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-10-21 19:57:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-21 19:57:19,699 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-10-21 19:57:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:19,700 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-21 19:57:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-21 19:57:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:57:19,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:19,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:19,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:19,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:19,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-10-21 19:57:19,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:19,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861939712] [2021-10-21 19:57:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:19,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:19,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:57:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:57:20,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:20,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:20,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:20,246 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:57:20,246 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 [2021-10-21 19:57:20,257 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 19:57:20,258 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 [2021-10-21 19:57:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:20,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:23,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:23,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861939712] [2021-10-21 19:57:23,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861939712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:23,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:23,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 19:57:23,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610331284] [2021-10-21 19:57:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:57:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:57:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-21 19:57:23,087 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:42,739 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-10-21 19:57:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:57:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:57:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:42,742 INFO L225 Difference]: With dead ends: 161 [2021-10-21 19:57:42,742 INFO L226 Difference]: Without dead ends: 161 [2021-10-21 19:57:42,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 19624.6ms TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-21 19:57:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-21 19:57:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-10-21 19:57:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 107 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-21 19:57:42,755 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-10-21 19:57:42,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:42,756 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-21 19:57:42,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-21 19:57:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:57:42,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:42,757 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:42,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:42,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:42,963 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-10-21 19:57:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:42,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250400014] [2021-10-21 19:57:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:42,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:42,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:42,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:57:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:43,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:57:43,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:43,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:43,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:43,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250400014] [2021-10-21 19:57:43,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250400014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:43,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:43,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:57:43,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405269804] [2021-10-21 19:57:43,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:57:43,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:57:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:57:43,253 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:43,615 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-10-21 19:57:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:57:43,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-21 19:57:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:43,618 INFO L225 Difference]: With dead ends: 132 [2021-10-21 19:57:43,618 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:57:43,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:57:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-10-21 19:57:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 105 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-10-21 19:57:43,628 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-10-21 19:57:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:43,629 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-10-21 19:57:43,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-10-21 19:57:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:57:43,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:43,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:43,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-21 19:57:43,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:43,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-10-21 19:57:43,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:43,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039074230] [2021-10-21 19:57:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:43,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:43,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:43,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:43,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:57:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:43,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:57:44,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:44,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:44,084 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 [2021-10-21 19:57:44,132 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 [2021-10-21 19:57:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:44,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:44,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:44,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039074230] [2021-10-21 19:57:44,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039074230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:44,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:44,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:57:44,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152731832] [2021-10-21 19:57:44,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:57:44,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:57:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:57:44,297 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:45,044 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-10-21 19:57:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:57:45,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-21 19:57:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:45,046 INFO L225 Difference]: With dead ends: 112 [2021-10-21 19:57:45,046 INFO L226 Difference]: Without dead ends: 112 [2021-10-21 19:57:45,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:57:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-21 19:57:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-10-21 19:57:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 104 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-10-21 19:57:45,055 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-10-21 19:57:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:45,055 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-10-21 19:57:45,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-10-21 19:57:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:57:45,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:45,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:45,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:45,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:45,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-10-21 19:57:45,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:45,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936414363] [2021-10-21 19:57:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:45,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:45,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:45,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:57:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:45,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:57:45,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:45,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:57:45,518 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 [2021-10-21 19:57:45,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-21 19:57:45,602 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 [2021-10-21 19:57:45,608 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 [2021-10-21 19:57:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:45,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:46,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:46,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936414363] [2021-10-21 19:57:46,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936414363] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:46,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:46,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 19:57:46,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665673880] [2021-10-21 19:57:46,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:57:46,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:57:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:57:46,128 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:48,243 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-10-21 19:57:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:57:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-21 19:57:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:48,245 INFO L225 Difference]: With dead ends: 127 [2021-10-21 19:57:48,245 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 19:57:48,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 728.4ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:57:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 19:57:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-10-21 19:57:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-10-21 19:57:48,252 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-10-21 19:57:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:48,252 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-10-21 19:57:48,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-10-21 19:57:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:57:48,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:48,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:48,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:48,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:48,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-10-21 19:57:48,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:48,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942229809] [2021-10-21 19:57:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:48,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:48,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:48,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:57:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:48,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:57:48,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:48,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-21 19:57:48,744 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 [2021-10-21 19:57:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:48,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:57:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:48,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:57:48,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942229809] [2021-10-21 19:57:48,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942229809] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:48,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:48,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:57:48,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117368410] [2021-10-21 19:57:48,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:57:48,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:57:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:57:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:48,835 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:49,400 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-10-21 19:57:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:57:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-21 19:57:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:49,401 INFO L225 Difference]: With dead ends: 166 [2021-10-21 19:57:49,402 INFO L226 Difference]: Without dead ends: 166 [2021-10-21 19:57:49,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-21 19:57:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-10-21 19:57:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-10-21 19:57:49,408 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-10-21 19:57:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:49,408 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-10-21 19:57:49,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-10-21 19:57:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:57:49,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:49,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:49,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:49,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:49,618 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-10-21 19:57:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-10-21 19:57:49,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:57:49,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339852297] [2021-10-21 19:57:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:49,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:57:49,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:57:49,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:57:49,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:57:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:49,810 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:49,906 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:57:49,906 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:57:49,907 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:49,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:57:49,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:57:49,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:57:49,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:57:49,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:57:49,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 19:57:49,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 19:57:49,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:49,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 19:57:49,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 19:57:49,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:49,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 19:57:49,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 19:57:49,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 19:57:49,919 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 19:57:49,919 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 19:57:49,923 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-21 19:57:49,923 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-21 19:57:49,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-21 19:57:49,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-21 19:57:49,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-21 19:57:49,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-21 19:57:49,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-21 19:57:49,927 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-21 19:57:49,927 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,927 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,927 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:57:49,927 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:49,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:57:50,141 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:57:50,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:57:50 BoogieIcfgContainer [2021-10-21 19:57:50,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:57:50,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:57:50,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:57:50,173 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:57:50,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:16" (3/4) ... [2021-10-21 19:57:50,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:57:50,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:57:50,180 INFO L168 Benchmark]: Toolchain (without parser) took 34850.92 ms. Allocated memory was 62.9 MB in the beginning and 127.9 MB in the end (delta: 65.0 MB). Free memory was 42.7 MB in the beginning and 58.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:50,180 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:50,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 39.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:50,181 INFO L168 Benchmark]: Boogie Preprocessor took 73.10 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 36.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:50,182 INFO L168 Benchmark]: RCFGBuilder took 1025.38 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 36.5 MB in the beginning and 60.6 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:50,182 INFO L168 Benchmark]: TraceAbstraction took 33204.37 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.1 MB in the beginning and 59.6 MB in the end (delta: 529.6 kB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:50,182 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 127.9 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:50,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 39.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.10 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 36.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1025.38 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 36.5 MB in the beginning and 60.6 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33204.37 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 60.1 MB in the beginning and 59.6 MB in the end (delta: 529.6 kB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.98 ms. Allocated memory is still 127.9 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 33115.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 35.1ms, AutomataDifference: 24579.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 535 SDtfs, 957 SDslu, 902 SDs, 0 SdLazy, 1482 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5961.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 20677.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 119.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.5ms SsaConstructionTime, 291.1ms SatisfiabilityAnalysisTime, 4878.0ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 5 QuantifiedInterpolants, 873 SizeOfPredicates, 23 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:57:50,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd6cb5fb-8abf-4978-992d-4eb944399d5f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...