./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:57:27,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:57:27,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:57:27,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:57:27,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:57:27,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:57:27,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:57:27,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:57:27,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:57:27,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:57:27,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:57:27,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:57:27,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:57:27,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:57:27,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:57:27,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:57:27,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:57:27,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:57:27,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:57:27,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:57:27,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:57:27,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:57:27,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:57:27,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:57:27,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:57:27,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:57:27,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:57:27,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:57:27,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:57:27,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:57:27,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:57:27,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:57:27,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:57:27,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:57:27,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:57:27,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:57:27,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:57:27,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:57:27,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:57:27,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:57:27,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:57:27,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 12:57:27,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:57:27,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:57:27,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:57:27,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:57:27,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:57:27,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:57:27,511 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:57:27,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:57:27,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:57:27,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:57:27,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:57:27,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:57:27,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:57:27,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:57:27,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:57:27,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:57:27,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:57:27,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:57:27,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:57:27,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:57:27,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:57:27,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:57:27,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:57:27,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:57:27,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:57:27,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:57:27,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:57:27,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:57:27,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:57:27,521 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_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-23 12:57:27,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:57:27,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:57:27,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:57:27,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:57:27,892 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:57:27,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-23 12:57:28,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/data/39f494e63/20890dfd1ce642e5baaeae8af575867d/FLAG1357a771c [2021-11-23 12:57:29,159 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:57:29,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-23 12:57:29,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/data/39f494e63/20890dfd1ce642e5baaeae8af575867d/FLAG1357a771c [2021-11-23 12:57:29,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/data/39f494e63/20890dfd1ce642e5baaeae8af575867d [2021-11-23 12:57:29,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:57:29,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:57:29,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:57:29,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:57:29,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:57:29,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:57:29" (1/1) ... [2021-11-23 12:57:29,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dd0ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:29, skipping insertion in model container [2021-11-23 12:57:29,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:57:29" (1/1) ... [2021-11-23 12:57:29,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:57:29,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:57:33,229 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-23 12:57:33,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-23 12:57:33,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:57:33,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:57:33,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-23 12:57:33,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-23 12:57:33,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:57:34,121 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:57:34,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34 WrapperNode [2021-11-23 12:57:34,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:57:34,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:57:34,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:57:34,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:57:34,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:34,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:35,235 INFO L137 Inliner]: procedures = 454, calls = 1901, calls flagged for inlining = 939, calls inlined = 3485, statements flattened = 32790 [2021-11-23 12:57:35,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:57:35,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:57:35,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:57:35,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:57:35,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:35,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:35,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:35,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:36,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:36,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:36,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:37,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:57:37,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:57:37,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:57:37,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:57:37,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (1/1) ... [2021-11-23 12:57:37,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:57:37,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:57:37,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:57:37,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:57:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:57:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 12:57:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 12:57:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:57:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:57:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:57:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:57:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:57:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:57:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 12:57:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 12:57:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:57:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:57:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:57:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:57:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:57:38,534 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:57:38,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:57:54,339 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 12:57:54,340 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 12:57:54,340 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 12:57:54,341 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 12:57:54,341 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 12:57:54,343 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 12:57:54,344 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:57:54,406 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:57:54,407 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:57:54,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:57:54 BoogieIcfgContainer [2021-11-23 12:57:54,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:57:54,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:57:54,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:57:54,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:57:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:57:29" (1/3) ... [2021-11-23 12:57:54,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d0ab36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:57:54, skipping insertion in model container [2021-11-23 12:57:54,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:57:34" (2/3) ... [2021-11-23 12:57:54,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d0ab36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:57:54, skipping insertion in model container [2021-11-23 12:57:54,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:57:54" (3/3) ... [2021-11-23 12:57:54,432 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-23 12:57:54,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:57:54,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-23 12:57:54,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:57:54,557 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:57:54,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 12:57:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 6343 states, 6336 states have (on average 1.269570707070707) internal successors, (8044), 6342 states have internal predecessors, (8044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 12:57:54,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:57:54,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:57:54,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:57:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:57:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 514130502, now seen corresponding path program 1 times [2021-11-23 12:57:54,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:57:54,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871713718] [2021-11-23 12:57:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:57:54,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:57:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:57:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:57:55,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:57:55,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871713718] [2021-11-23 12:57:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871713718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:57:55,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:57:55,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:57:55,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830786350] [2021-11-23 12:57:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:57:55,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:57:55,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:57:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:57:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:57:55,676 INFO L87 Difference]: Start difference. First operand has 6343 states, 6336 states have (on average 1.269570707070707) internal successors, (8044), 6342 states have internal predecessors, (8044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:57:56,789 INFO L93 Difference]: Finished difference Result 14786 states and 18794 transitions. [2021-11-23 12:57:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:57:56,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-23 12:57:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:57:56,885 INFO L225 Difference]: With dead ends: 14786 [2021-11-23 12:57:56,886 INFO L226 Difference]: Without dead ends: 8267 [2021-11-23 12:57:56,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:57:56,930 INFO L933 BasicCegarLoop]: 7952 mSDtfsCounter, 2815 mSDsluCounter, 7893 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 15845 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:57:56,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 15845 Invalid, 94 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:57:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8267 states. [2021-11-23 12:57:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8267 to 8259. [2021-11-23 12:57:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 8252 states have (on average 1.2463645176926805) internal successors, (10285), 8258 states have internal predecessors, (10285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 10285 transitions. [2021-11-23 12:57:57,414 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 10285 transitions. Word has length 78 [2021-11-23 12:57:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:57:57,417 INFO L470 AbstractCegarLoop]: Abstraction has 8259 states and 10285 transitions. [2021-11-23 12:57:57,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 10285 transitions. [2021-11-23 12:57:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:57:57,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:57:57,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:57:57,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:57:57,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:57:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:57:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1139942004, now seen corresponding path program 1 times [2021-11-23 12:57:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:57:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036477448] [2021-11-23 12:57:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:57:57,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:57:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:57:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:57:57,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:57:57,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036477448] [2021-11-23 12:57:57,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036477448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:57:57,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:57:57,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:57:57,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150104056] [2021-11-23 12:57:57,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:57:57,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:57:57,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:57:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:57:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:57:57,786 INFO L87 Difference]: Start difference. First operand 8259 states and 10285 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:57:58,863 INFO L93 Difference]: Finished difference Result 21211 states and 26415 transitions. [2021-11-23 12:57:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:57:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:57:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:57:58,961 INFO L225 Difference]: With dead ends: 21211 [2021-11-23 12:57:58,962 INFO L226 Difference]: Without dead ends: 13037 [2021-11-23 12:57:58,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:57:58,985 INFO L933 BasicCegarLoop]: 7589 mSDtfsCounter, 5371 mSDsluCounter, 7501 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 15090 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:57:58,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5371 Valid, 15090 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:57:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13037 states. [2021-11-23 12:57:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13037 to 12287. [2021-11-23 12:57:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12287 states, 12280 states have (on average 1.2504885993485342) internal successors, (15356), 12286 states have internal predecessors, (15356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12287 states to 12287 states and 15356 transitions. [2021-11-23 12:57:59,653 INFO L78 Accepts]: Start accepts. Automaton has 12287 states and 15356 transitions. Word has length 86 [2021-11-23 12:57:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:57:59,662 INFO L470 AbstractCegarLoop]: Abstraction has 12287 states and 15356 transitions. [2021-11-23 12:57:59,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:57:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12287 states and 15356 transitions. [2021-11-23 12:57:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 12:57:59,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:57:59,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:57:59,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:57:59,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:57:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:57:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2102376053, now seen corresponding path program 1 times [2021-11-23 12:57:59,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:57:59,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467305847] [2021-11-23 12:57:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:57:59,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:57:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:57:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:57:59,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:57:59,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467305847] [2021-11-23 12:57:59,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467305847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:57:59,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:57:59,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:57:59,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898436951] [2021-11-23 12:57:59,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:57:59,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:57:59,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:57:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:57:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:57:59,994 INFO L87 Difference]: Start difference. First operand 12287 states and 15356 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:00,911 INFO L93 Difference]: Finished difference Result 27068 states and 33909 transitions. [2021-11-23 12:58:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-23 12:58:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:00,990 INFO L225 Difference]: With dead ends: 27068 [2021-11-23 12:58:00,991 INFO L226 Difference]: Without dead ends: 14866 [2021-11-23 12:58:01,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:01,022 INFO L933 BasicCegarLoop]: 10271 mSDtfsCounter, 2683 mSDsluCounter, 7527 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 17798 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:01,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 17798 Invalid, 86 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:01,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14866 states. [2021-11-23 12:58:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14866 to 14854. [2021-11-23 12:58:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14854 states, 14847 states have (on average 1.253317168451539) internal successors, (18608), 14853 states have internal predecessors, (18608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14854 states to 14854 states and 18608 transitions. [2021-11-23 12:58:01,707 INFO L78 Accepts]: Start accepts. Automaton has 14854 states and 18608 transitions. Word has length 108 [2021-11-23 12:58:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:01,708 INFO L470 AbstractCegarLoop]: Abstraction has 14854 states and 18608 transitions. [2021-11-23 12:58:01,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:01,708 INFO L276 IsEmpty]: Start isEmpty. Operand 14854 states and 18608 transitions. [2021-11-23 12:58:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:58:01,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:01,718 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:01,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:58:01,718 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1068032510, now seen corresponding path program 1 times [2021-11-23 12:58:01,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:01,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169180500] [2021-11-23 12:58:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:01,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:58:01,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:01,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169180500] [2021-11-23 12:58:01,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169180500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:01,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:01,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:01,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136174604] [2021-11-23 12:58:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:01,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:01,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:01,979 INFO L87 Difference]: Start difference. First operand 14854 states and 18608 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:02,966 INFO L93 Difference]: Finished difference Result 32196 states and 40399 transitions. [2021-11-23 12:58:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-23 12:58:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:03,023 INFO L225 Difference]: With dead ends: 32196 [2021-11-23 12:58:03,024 INFO L226 Difference]: Without dead ends: 17427 [2021-11-23 12:58:03,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:03,063 INFO L933 BasicCegarLoop]: 10272 mSDtfsCounter, 2678 mSDsluCounter, 7541 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 17813 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:03,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 17813 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2021-11-23 12:58:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17415. [2021-11-23 12:58:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17415 states, 17408 states have (on average 1.2553998161764706) internal successors, (21854), 17414 states have internal predecessors, (21854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17415 states to 17415 states and 21854 transitions. [2021-11-23 12:58:03,840 INFO L78 Accepts]: Start accepts. Automaton has 17415 states and 21854 transitions. Word has length 146 [2021-11-23 12:58:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:03,841 INFO L470 AbstractCegarLoop]: Abstraction has 17415 states and 21854 transitions. [2021-11-23 12:58:03,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 17415 states and 21854 transitions. [2021-11-23 12:58:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:58:03,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:03,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:03,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:58:03,853 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1961518848, now seen corresponding path program 1 times [2021-11-23 12:58:03,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:03,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300714382] [2021-11-23 12:58:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:03,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:58:04,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:04,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300714382] [2021-11-23 12:58:04,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300714382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:04,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:04,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:04,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400799355] [2021-11-23 12:58:04,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:04,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:04,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:04,071 INFO L87 Difference]: Start difference. First operand 17415 states and 21854 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:04,952 INFO L93 Difference]: Finished difference Result 37324 states and 46903 transitions. [2021-11-23 12:58:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-23 12:58:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:05,024 INFO L225 Difference]: With dead ends: 37324 [2021-11-23 12:58:05,025 INFO L226 Difference]: Without dead ends: 19994 [2021-11-23 12:58:05,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:05,067 INFO L933 BasicCegarLoop]: 10272 mSDtfsCounter, 3411 mSDsluCounter, 6811 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 17083 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:05,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 17083 Invalid, 85 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:05,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19994 states. [2021-11-23 12:58:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19994 to 19982. [2021-11-23 12:58:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19982 states, 19975 states have (on average 1.2568710888610763) internal successors, (25106), 19981 states have internal predecessors, (25106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19982 states to 19982 states and 25106 transitions. [2021-11-23 12:58:06,049 INFO L78 Accepts]: Start accepts. Automaton has 19982 states and 25106 transitions. Word has length 146 [2021-11-23 12:58:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:06,049 INFO L470 AbstractCegarLoop]: Abstraction has 19982 states and 25106 transitions. [2021-11-23 12:58:06,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 19982 states and 25106 transitions. [2021-11-23 12:58:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 12:58:06,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:06,247 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:06,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:58:06,247 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash 239402269, now seen corresponding path program 1 times [2021-11-23 12:58:06,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875476775] [2021-11-23 12:58:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:06,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-23 12:58:06,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875476775] [2021-11-23 12:58:06,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875476775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:06,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:06,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:06,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310919236] [2021-11-23 12:58:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:06,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:06,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:06,524 INFO L87 Difference]: Start difference. First operand 19982 states and 25106 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:07,471 INFO L93 Difference]: Finished difference Result 42454 states and 53399 transitions. [2021-11-23 12:58:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-23 12:58:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:07,544 INFO L225 Difference]: With dead ends: 42454 [2021-11-23 12:58:07,544 INFO L226 Difference]: Without dead ends: 22557 [2021-11-23 12:58:07,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:07,580 INFO L933 BasicCegarLoop]: 8154 mSDtfsCounter, 2681 mSDsluCounter, 7539 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 15693 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:07,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2681 Valid, 15693 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22557 states. [2021-11-23 12:58:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22557 to 22545. [2021-11-23 12:58:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22545 states, 22538 states have (on average 1.2580530659330909) internal successors, (28354), 22544 states have internal predecessors, (28354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22545 states to 22545 states and 28354 transitions. [2021-11-23 12:58:08,432 INFO L78 Accepts]: Start accepts. Automaton has 22545 states and 28354 transitions. Word has length 182 [2021-11-23 12:58:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:08,432 INFO L470 AbstractCegarLoop]: Abstraction has 22545 states and 28354 transitions. [2021-11-23 12:58:08,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22545 states and 28354 transitions. [2021-11-23 12:58:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 12:58:08,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:08,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:08,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:58:08,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:08,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1132888607, now seen corresponding path program 1 times [2021-11-23 12:58:08,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:08,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603062324] [2021-11-23 12:58:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:08,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-23 12:58:08,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603062324] [2021-11-23 12:58:08,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603062324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:08,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:08,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:08,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517947975] [2021-11-23 12:58:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:08,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:08,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:08,969 INFO L87 Difference]: Start difference. First operand 22545 states and 28354 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:10,039 INFO L93 Difference]: Finished difference Result 47582 states and 59899 transitions. [2021-11-23 12:58:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-23 12:58:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:10,359 INFO L225 Difference]: With dead ends: 47582 [2021-11-23 12:58:10,359 INFO L226 Difference]: Without dead ends: 25122 [2021-11-23 12:58:10,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:10,389 INFO L933 BasicCegarLoop]: 10272 mSDtfsCounter, 2690 mSDsluCounter, 7531 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 17803 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:10,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2690 Valid, 17803 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25122 states. [2021-11-23 12:58:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 25110. [2021-11-23 12:58:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25110 states, 25103 states have (on average 1.2589730311118192) internal successors, (31604), 25109 states have internal predecessors, (31604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25110 states to 25110 states and 31604 transitions. [2021-11-23 12:58:11,467 INFO L78 Accepts]: Start accepts. Automaton has 25110 states and 31604 transitions. Word has length 182 [2021-11-23 12:58:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:11,468 INFO L470 AbstractCegarLoop]: Abstraction has 25110 states and 31604 transitions. [2021-11-23 12:58:11,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 25110 states and 31604 transitions. [2021-11-23 12:58:11,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-23 12:58:11,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:11,487 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:11,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:58:11,487 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:11,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1080673954, now seen corresponding path program 1 times [2021-11-23 12:58:11,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:11,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831040123] [2021-11-23 12:58:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:11,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-23 12:58:11,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:11,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831040123] [2021-11-23 12:58:11,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831040123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:11,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:11,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:11,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233554157] [2021-11-23 12:58:11,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:11,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:11,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:11,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:11,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:11,777 INFO L87 Difference]: Start difference. First operand 25110 states and 31604 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:13,324 INFO L93 Difference]: Finished difference Result 51311 states and 64625 transitions. [2021-11-23 12:58:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-23 12:58:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:13,414 INFO L225 Difference]: With dead ends: 51311 [2021-11-23 12:58:13,414 INFO L226 Difference]: Without dead ends: 26286 [2021-11-23 12:58:13,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:13,474 INFO L933 BasicCegarLoop]: 7479 mSDtfsCounter, 500 mSDsluCounter, 7439 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 14918 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:13,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 14918 Invalid, 298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:58:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26286 states. [2021-11-23 12:58:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26286 to 25166. [2021-11-23 12:58:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.258396597639016) internal successors, (31660), 25165 states have internal predecessors, (31660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31660 transitions. [2021-11-23 12:58:14,586 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31660 transitions. Word has length 210 [2021-11-23 12:58:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:14,587 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31660 transitions. [2021-11-23 12:58:14,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31660 transitions. [2021-11-23 12:58:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-23 12:58:14,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:14,607 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:14,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:58:14,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:14,609 INFO L85 PathProgramCache]: Analyzing trace with hash 278782078, now seen corresponding path program 1 times [2021-11-23 12:58:14,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:14,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645730699] [2021-11-23 12:58:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:14,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:14,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645730699] [2021-11-23 12:58:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645730699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479018896] [2021-11-23 12:58:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:14,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:14,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:14,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:14,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:58:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:16,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:16,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:16,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:16,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479018896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:16,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:16,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:16,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262841720] [2021-11-23 12:58:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:16,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:16,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:16,954 INFO L87 Difference]: Start difference. First operand 25166 states and 31660 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:18,073 INFO L93 Difference]: Finished difference Result 50247 states and 63225 transitions. [2021-11-23 12:58:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-23 12:58:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:18,174 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:18,175 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:18,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:18,218 INFO L933 BasicCegarLoop]: 7585 mSDtfsCounter, 7430 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7430 SdHoareTripleChecker+Valid, 7585 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:18,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7430 Valid, 7585 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.257442664652808) internal successors, (31636), 25165 states have internal predecessors, (31636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31636 transitions. [2021-11-23 12:58:19,295 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31636 transitions. Word has length 218 [2021-11-23 12:58:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:19,296 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31636 transitions. [2021-11-23 12:58:19,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31636 transitions. [2021-11-23 12:58:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 12:58:19,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:19,314 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:19,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:19,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 12:58:19,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash 52555687, now seen corresponding path program 1 times [2021-11-23 12:58:19,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:19,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380804749] [2021-11-23 12:58:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:19,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:19,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:19,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380804749] [2021-11-23 12:58:19,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380804749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:19,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921180681] [2021-11-23 12:58:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:19,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:19,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:19,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:19,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:58:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:21,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:21,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:21,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:21,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921180681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:21,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:21,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:21,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605745482] [2021-11-23 12:58:21,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:21,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:21,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:21,862 INFO L87 Difference]: Start difference. First operand 25166 states and 31636 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:23,064 INFO L93 Difference]: Finished difference Result 50247 states and 63177 transitions. [2021-11-23 12:58:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:23,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-11-23 12:58:23,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:23,151 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:23,151 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:23,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:23,188 INFO L933 BasicCegarLoop]: 7578 mSDtfsCounter, 7422 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7422 SdHoareTripleChecker+Valid, 7578 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:23,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7422 Valid, 7578 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.2564887316666005) internal successors, (31612), 25165 states have internal predecessors, (31612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31612 transitions. [2021-11-23 12:58:24,293 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31612 transitions. Word has length 219 [2021-11-23 12:58:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:24,294 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31612 transitions. [2021-11-23 12:58:24,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31612 transitions. [2021-11-23 12:58:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-23 12:58:24,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:24,313 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:24,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:24,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:24,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1629621113, now seen corresponding path program 1 times [2021-11-23 12:58:24,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:24,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757413772] [2021-11-23 12:58:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:24,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:24,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:24,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757413772] [2021-11-23 12:58:24,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757413772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:24,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540094266] [2021-11-23 12:58:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:24,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:24,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:24,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:24,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:58:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:26,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:26,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:26,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:26,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540094266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:26,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:26,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:26,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537267845] [2021-11-23 12:58:26,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:26,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:26,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:26,755 INFO L87 Difference]: Start difference. First operand 25166 states and 31612 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:27,664 INFO L93 Difference]: Finished difference Result 50247 states and 63129 transitions. [2021-11-23 12:58:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-11-23 12:58:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:27,734 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:27,734 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:27,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:27,782 INFO L933 BasicCegarLoop]: 7571 mSDtfsCounter, 7414 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7414 SdHoareTripleChecker+Valid, 7571 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:27,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7414 Valid, 7571 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.2555347986803926) internal successors, (31588), 25165 states have internal predecessors, (31588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31588 transitions. [2021-11-23 12:58:28,737 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31588 transitions. Word has length 220 [2021-11-23 12:58:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:28,737 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31588 transitions. [2021-11-23 12:58:28,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31588 transitions. [2021-11-23 12:58:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-23 12:58:28,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:28,752 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:28,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:28,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:28,966 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1020809278, now seen corresponding path program 1 times [2021-11-23 12:58:28,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:28,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732148143] [2021-11-23 12:58:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:28,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:29,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:29,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732148143] [2021-11-23 12:58:29,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732148143] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:29,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901805197] [2021-11-23 12:58:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:29,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:29,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:29,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:58:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:30,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:30,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:30,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:30,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901805197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:30,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:30,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:30,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494163595] [2021-11-23 12:58:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:30,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:30,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:30,997 INFO L87 Difference]: Start difference. First operand 25166 states and 31588 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:32,158 INFO L93 Difference]: Finished difference Result 50247 states and 63081 transitions. [2021-11-23 12:58:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:32,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-11-23 12:58:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:32,215 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:32,216 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:32,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:32,264 INFO L933 BasicCegarLoop]: 7564 mSDtfsCounter, 7406 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7406 SdHoareTripleChecker+Valid, 7564 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:32,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7406 Valid, 7564 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.254580865694185) internal successors, (31564), 25165 states have internal predecessors, (31564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31564 transitions. [2021-11-23 12:58:33,481 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31564 transitions. Word has length 221 [2021-11-23 12:58:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:33,481 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31564 transitions. [2021-11-23 12:58:33,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31564 transitions. [2021-11-23 12:58:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 12:58:33,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:33,492 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:33,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:33,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 12:58:33,718 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1579623820, now seen corresponding path program 1 times [2021-11-23 12:58:33,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:33,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729951066] [2021-11-23 12:58:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:33,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:33,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:33,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729951066] [2021-11-23 12:58:33,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729951066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:33,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983940404] [2021-11-23 12:58:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:33,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:33,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:33,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:58:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:35,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:35,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:35,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983940404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:35,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:35,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:35,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272211924] [2021-11-23 12:58:35,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:35,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:35,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:35,686 INFO L87 Difference]: Start difference. First operand 25166 states and 31564 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:36,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:36,679 INFO L93 Difference]: Finished difference Result 50247 states and 63033 transitions. [2021-11-23 12:58:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:36,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2021-11-23 12:58:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:36,723 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:36,724 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:36,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:36,760 INFO L933 BasicCegarLoop]: 7557 mSDtfsCounter, 7398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7398 SdHoareTripleChecker+Valid, 7557 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:36,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7398 Valid, 7557 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.2536269327079772) internal successors, (31540), 25165 states have internal predecessors, (31540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31540 transitions. [2021-11-23 12:58:37,861 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31540 transitions. Word has length 222 [2021-11-23 12:58:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:37,862 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31540 transitions. [2021-11-23 12:58:37,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31540 transitions. [2021-11-23 12:58:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-23 12:58:37,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:37,871 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:37,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 12:58:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 12:58:38,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1722856483, now seen corresponding path program 1 times [2021-11-23 12:58:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:38,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117776356] [2021-11-23 12:58:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:38,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:38,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117776356] [2021-11-23 12:58:38,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117776356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263021109] [2021-11-23 12:58:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:38,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:38,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:38,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:38,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:58:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:39,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:58:39,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 12:58:40,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:40,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263021109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:40,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:40,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 12:58:40,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958093730] [2021-11-23 12:58:40,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:40,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:40,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:40,165 INFO L87 Difference]: Start difference. First operand 25166 states and 31540 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:41,204 INFO L93 Difference]: Finished difference Result 50247 states and 62985 transitions. [2021-11-23 12:58:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2021-11-23 12:58:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:41,245 INFO L225 Difference]: With dead ends: 50247 [2021-11-23 12:58:41,245 INFO L226 Difference]: Without dead ends: 25166 [2021-11-23 12:58:41,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:41,276 INFO L933 BasicCegarLoop]: 7550 mSDtfsCounter, 7390 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7390 SdHoareTripleChecker+Valid, 7550 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:41,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7390 Valid, 7550 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2021-11-23 12:58:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 25166. [2021-11-23 12:58:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25166 states, 25159 states have (on average 1.2526729997217696) internal successors, (31516), 25165 states have internal predecessors, (31516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 31516 transitions. [2021-11-23 12:58:42,321 INFO L78 Accepts]: Start accepts. Automaton has 25166 states and 31516 transitions. Word has length 223 [2021-11-23 12:58:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:42,322 INFO L470 AbstractCegarLoop]: Abstraction has 25166 states and 31516 transitions. [2021-11-23 12:58:42,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 25166 states and 31516 transitions. [2021-11-23 12:58:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 12:58:42,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:42,336 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:42,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:42,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 12:58:42,540 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1867952785, now seen corresponding path program 1 times [2021-11-23 12:58:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630883206] [2021-11-23 12:58:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:42,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:42,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630883206] [2021-11-23 12:58:42,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630883206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710164536] [2021-11-23 12:58:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:42,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:42,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:42,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:58:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:44,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:44,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:44,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:58:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 12:58:44,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710164536] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:58:44,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:58:44,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:58:44,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229680226] [2021-11-23 12:58:44,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:58:44,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:58:44,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:58:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:58:44,928 INFO L87 Difference]: Start difference. First operand 25166 states and 31516 transitions. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:47,705 INFO L93 Difference]: Finished difference Result 53775 states and 67473 transitions. [2021-11-23 12:58:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:58:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-11-23 12:58:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:47,746 INFO L225 Difference]: With dead ends: 53775 [2021-11-23 12:58:47,746 INFO L226 Difference]: Without dead ends: 28694 [2021-11-23 12:58:47,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:58:47,772 INFO L933 BasicCegarLoop]: 7437 mSDtfsCounter, 2994 mSDsluCounter, 22191 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 29628 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:47,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2994 Valid, 29628 Invalid, 754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [194 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 12:58:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28694 states. [2021-11-23 12:58:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28694 to 28694. [2021-11-23 12:58:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28694 states, 28687 states have (on average 1.2508801896329347) internal successors, (35884), 28693 states have internal predecessors, (35884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28694 states to 28694 states and 35884 transitions. [2021-11-23 12:58:49,069 INFO L78 Accepts]: Start accepts. Automaton has 28694 states and 35884 transitions. Word has length 224 [2021-11-23 12:58:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 28694 states and 35884 transitions. [2021-11-23 12:58:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 28694 states and 35884 transitions. [2021-11-23 12:58:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-23 12:58:49,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:49,082 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:49,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:49,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 12:58:49,283 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash -362800370, now seen corresponding path program 1 times [2021-11-23 12:58:49,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:49,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242598993] [2021-11-23 12:58:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:49,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-23 12:58:49,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242598993] [2021-11-23 12:58:49,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242598993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:49,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:49,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:58:49,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480949033] [2021-11-23 12:58:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:49,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:58:49,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:58:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:49,650 INFO L87 Difference]: Start difference. First operand 28694 states and 35884 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:54,865 INFO L93 Difference]: Finished difference Result 105459 states and 131412 transitions. [2021-11-23 12:58:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:58:54,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2021-11-23 12:58:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:55,033 INFO L225 Difference]: With dead ends: 105459 [2021-11-23 12:58:55,034 INFO L226 Difference]: Without dead ends: 76850 [2021-11-23 12:58:55,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:58:55,083 INFO L933 BasicCegarLoop]: 12997 mSDtfsCounter, 30660 mSDsluCounter, 29272 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30660 SdHoareTripleChecker+Valid, 42269 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:55,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30660 Valid, 42269 Invalid, 241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:58:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76850 states. [2021-11-23 12:58:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76850 to 28766. [2021-11-23 12:58:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28766 states, 28759 states have (on average 1.250252094996349) internal successors, (35956), 28765 states have internal predecessors, (35956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28766 states to 28766 states and 35956 transitions. [2021-11-23 12:58:57,677 INFO L78 Accepts]: Start accepts. Automaton has 28766 states and 35956 transitions. Word has length 242 [2021-11-23 12:58:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:57,678 INFO L470 AbstractCegarLoop]: Abstraction has 28766 states and 35956 transitions. [2021-11-23 12:58:57,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28766 states and 35956 transitions. [2021-11-23 12:58:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-23 12:58:57,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:57,694 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:57,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:58:57,696 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:58:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash -816948017, now seen corresponding path program 2 times [2021-11-23 12:58:57,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307668559] [2021-11-23 12:58:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:57,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-23 12:58:58,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:58,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307668559] [2021-11-23 12:58:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307668559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:58,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575898003] [2021-11-23 12:58:58,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:58:58,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:58,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:58,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:58:59,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 12:58:59,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:58:59,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:58:59,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-23 12:58:59,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575898003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:59,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:59,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-23 12:58:59,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364878727] [2021-11-23 12:58:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:59,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:59,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:58:59,632 INFO L87 Difference]: Start difference. First operand 28766 states and 35956 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:03,829 INFO L93 Difference]: Finished difference Result 84444 states and 105456 transitions. [2021-11-23 12:59:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-23 12:59:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:03,831 INFO L225 Difference]: With dead ends: 84444 [2021-11-23 12:59:03,831 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 12:59:03,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:59:03,907 INFO L933 BasicCegarLoop]: 14347 mSDtfsCounter, 7287 mSDsluCounter, 7053 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7287 SdHoareTripleChecker+Valid, 21400 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:03,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7287 Valid, 21400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 12:59:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 12:59:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 12:59:03,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 248 [2021-11-23 12:59:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:03,910 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 12:59:03,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 12:59:03,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 12:59:03,918 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-23 12:59:03,919 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-23 12:59:03,919 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-23 12:59:03,919 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-23 12:59:03,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-23 12:59:03,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-23 12:59:03,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-23 12:59:03,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 12:59:04,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf210e4-792d-4b1b-bd16-b769c95b2abf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 12:59:04,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.