./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC --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 32bit --witnessprinter.graph.data.programhash a53c33c96a6264663871b921e3f0c5acac01aa5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:13,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:13,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:13,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:13,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:13,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:13,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:13,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:13,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:13,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:13,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:13,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:13,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:13,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:13,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:13,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:13,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:13,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:13,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:13,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:13,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:13,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:13,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:13,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:13,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:13,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:13,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:13,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:13,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:13,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:13,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:13,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:13,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:13,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:13,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:13,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:13,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:13,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:13,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:13,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:13,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:13,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:23:13,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:13,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:13,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:13,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:13,337 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:13,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:13,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:13,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:13,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:13,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:13,340 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:13,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:13,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:13,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:13,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:13,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:13,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:13,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:13,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:13,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:13,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:23:13,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:13,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:13,342 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_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a53c33c96a6264663871b921e3f0c5acac01aa5b [2021-10-11 00:23:13,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:13,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:13,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:13,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:13,672 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:13,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-10-11 00:23:13,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/data/b2f79a779/669ea4de387d4e939705d7ffab05c02a/FLAG0df87268b [2021-10-11 00:23:14,306 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:14,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2021-10-11 00:23:14,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/data/b2f79a779/669ea4de387d4e939705d7ffab05c02a/FLAG0df87268b [2021-10-11 00:23:14,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/data/b2f79a779/669ea4de387d4e939705d7ffab05c02a [2021-10-11 00:23:14,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:14,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:14,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:14,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:14,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:14,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:14" (1/1) ... [2021-10-11 00:23:14,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c68e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:14, skipping insertion in model container [2021-10-11 00:23:14,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:14" (1/1) ... [2021-10-11 00:23:14,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:14,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:15,078 WARN L226 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_c1022338-3fdb-4c34-91ad-c99762fff84d/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-10-11 00:23:15,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:15,113 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:15,212 WARN L226 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_c1022338-3fdb-4c34-91ad-c99762fff84d/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2021-10-11 00:23:15,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:15,259 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:15,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15 WrapperNode [2021-10-11 00:23:15,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:15,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:15,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:15,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:15,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:15,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:15,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:15,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:15,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... [2021-10-11 00:23:15,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:15,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:15,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:15,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:15,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:23:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:17,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:17,063 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:23:17,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:17 BoogieIcfgContainer [2021-10-11 00:23:17,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:17,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:17,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:17,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:17,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:14" (1/3) ... [2021-10-11 00:23:17,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36209c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:17, skipping insertion in model container [2021-10-11 00:23:17,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:15" (2/3) ... [2021-10-11 00:23:17,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36209c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:17, skipping insertion in model container [2021-10-11 00:23:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:17" (3/3) ... [2021-10-11 00:23:17,078 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2021-10-11 00:23:17,092 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:17,096 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:23:17,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:23:17,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:17,149 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:17,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:17,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:17,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:17,150 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:17,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:17,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2021-10-11 00:23:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 00:23:17,179 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:17,179 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:17,180 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1162953203, now seen corresponding path program 1 times [2021-10-11 00:23:17,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:17,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33284698] [2021-10-11 00:23:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:17,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33284698] [2021-10-11 00:23:17,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:17,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:17,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64119092] [2021-10-11 00:23:17,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:17,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:17,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:17,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:17,725 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 3 states. [2021-10-11 00:23:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:18,738 INFO L93 Difference]: Finished difference Result 630 states and 1070 transitions. [2021-10-11 00:23:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:18,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2021-10-11 00:23:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:18,766 INFO L225 Difference]: With dead ends: 630 [2021-10-11 00:23:18,771 INFO L226 Difference]: Without dead ends: 318 [2021-10-11 00:23:18,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-11 00:23:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-10-11 00:23:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2021-10-11 00:23:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 467 transitions. [2021-10-11 00:23:18,839 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 467 transitions. Word has length 115 [2021-10-11 00:23:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:18,840 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 467 transitions. [2021-10-11 00:23:18,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 467 transitions. [2021-10-11 00:23:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-11 00:23:18,844 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:18,844 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:18,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:23:18,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:18,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1399875752, now seen corresponding path program 1 times [2021-10-11 00:23:18,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:18,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109924259] [2021-10-11 00:23:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:18,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109924259] [2021-10-11 00:23:18,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:18,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:18,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214738129] [2021-10-11 00:23:18,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:18,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:18,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:18,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:18,984 INFO L87 Difference]: Start difference. First operand 318 states and 467 transitions. Second operand 3 states. [2021-10-11 00:23:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:19,620 INFO L93 Difference]: Finished difference Result 919 states and 1357 transitions. [2021-10-11 00:23:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:19,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2021-10-11 00:23:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:19,635 INFO L225 Difference]: With dead ends: 919 [2021-10-11 00:23:19,635 INFO L226 Difference]: Without dead ends: 603 [2021-10-11 00:23:19,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-10-11 00:23:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-10-11 00:23:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2021-10-11 00:23:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 775 transitions. [2021-10-11 00:23:19,681 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 775 transitions. Word has length 119 [2021-10-11 00:23:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:19,681 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 775 transitions. [2021-10-11 00:23:19,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 775 transitions. [2021-10-11 00:23:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-11 00:23:19,687 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:19,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-10-11 00:23:19,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:23:19,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash 511500605, now seen corresponding path program 1 times [2021-10-11 00:23:19,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:19,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825887038] [2021-10-11 00:23:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:19,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825887038] [2021-10-11 00:23:19,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279155907] [2021-10-11 00:23:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:19,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:20,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 00:23:20,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:20,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-11 00:23:20,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130232057] [2021-10-11 00:23:20,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:20,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:20,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:20,232 INFO L87 Difference]: Start difference. First operand 601 states and 775 transitions. Second operand 3 states. [2021-10-11 00:23:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:20,893 INFO L93 Difference]: Finished difference Result 1619 states and 2118 transitions. [2021-10-11 00:23:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:20,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2021-10-11 00:23:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:20,912 INFO L225 Difference]: With dead ends: 1619 [2021-10-11 00:23:20,912 INFO L226 Difference]: Without dead ends: 1020 [2021-10-11 00:23:20,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-11 00:23:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 739. [2021-10-11 00:23:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2021-10-11 00:23:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 986 transitions. [2021-10-11 00:23:20,962 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 986 transitions. Word has length 124 [2021-10-11 00:23:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:20,962 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 986 transitions. [2021-10-11 00:23:20,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 986 transitions. [2021-10-11 00:23:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-11 00:23:20,971 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:20,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2021-10-11 00:23:21,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:23:21,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:21,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267431, now seen corresponding path program 1 times [2021-10-11 00:23:21,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:21,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317250938] [2021-10-11 00:23:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:21,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317250938] [2021-10-11 00:23:21,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:21,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:23:21,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369998806] [2021-10-11 00:23:21,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:21,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:21,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:21,337 INFO L87 Difference]: Start difference. First operand 739 states and 986 transitions. Second operand 3 states. [2021-10-11 00:23:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:21,961 INFO L93 Difference]: Finished difference Result 1900 states and 2607 transitions. [2021-10-11 00:23:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:21,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2021-10-11 00:23:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:21,969 INFO L225 Difference]: With dead ends: 1900 [2021-10-11 00:23:21,969 INFO L226 Difference]: Without dead ends: 1163 [2021-10-11 00:23:21,971 INFO L677 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 [2021-10-11 00:23:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-10-11 00:23:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1160. [2021-10-11 00:23:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2021-10-11 00:23:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1588 transitions. [2021-10-11 00:23:22,003 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1588 transitions. Word has length 138 [2021-10-11 00:23:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:22,003 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1588 transitions. [2021-10-11 00:23:22,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1588 transitions. [2021-10-11 00:23:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-11 00:23:22,007 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:22,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 00:23:22,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:23:22,007 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1795097999, now seen corresponding path program 1 times [2021-10-11 00:23:22,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311960824] [2021-10-11 00:23:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:22,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311960824] [2021-10-11 00:23:22,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761222847] [2021-10-11 00:23:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:22,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:23:22,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:22,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-11 00:23:22,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273234578] [2021-10-11 00:23:22,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:22,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:22,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:22,608 INFO L87 Difference]: Start difference. First operand 1160 states and 1588 transitions. Second operand 3 states. [2021-10-11 00:23:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:23,217 INFO L93 Difference]: Finished difference Result 3032 states and 4145 transitions. [2021-10-11 00:23:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:23,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2021-10-11 00:23:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:23,230 INFO L225 Difference]: With dead ends: 3032 [2021-10-11 00:23:23,230 INFO L226 Difference]: Without dead ends: 1874 [2021-10-11 00:23:23,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-10-11 00:23:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1593. [2021-10-11 00:23:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2021-10-11 00:23:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2080 transitions. [2021-10-11 00:23:23,287 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2080 transitions. Word has length 142 [2021-10-11 00:23:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:23,287 INFO L481 AbstractCegarLoop]: Abstraction has 1593 states and 2080 transitions. [2021-10-11 00:23:23,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2080 transitions. [2021-10-11 00:23:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-11 00:23:23,292 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:23,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:23,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:23,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:23,519 INFO L82 PathProgramCache]: Analyzing trace with hash 807424059, now seen corresponding path program 1 times [2021-10-11 00:23:23,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:23,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175139464] [2021-10-11 00:23:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 00:23:23,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175139464] [2021-10-11 00:23:23,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:23,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:23,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275992922] [2021-10-11 00:23:23,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:23,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:23,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:23,594 INFO L87 Difference]: Start difference. First operand 1593 states and 2080 transitions. Second operand 3 states. [2021-10-11 00:23:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:24,136 INFO L93 Difference]: Finished difference Result 3172 states and 4140 transitions. [2021-10-11 00:23:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:24,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2021-10-11 00:23:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:24,146 INFO L225 Difference]: With dead ends: 3172 [2021-10-11 00:23:24,146 INFO L226 Difference]: Without dead ends: 1581 [2021-10-11 00:23:24,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-10-11 00:23:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2021-10-11 00:23:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2021-10-11 00:23:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1901 transitions. [2021-10-11 00:23:24,190 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1901 transitions. Word has length 146 [2021-10-11 00:23:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:24,190 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 1901 transitions. [2021-10-11 00:23:24,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1901 transitions. [2021-10-11 00:23:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 00:23:24,195 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:24,195 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:24,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:23:24,196 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:24,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1954101729, now seen corresponding path program 1 times [2021-10-11 00:23:24,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:24,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126944419] [2021-10-11 00:23:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-11 00:23:24,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126944419] [2021-10-11 00:23:24,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655324555] [2021-10-11 00:23:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:24,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:24,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 00:23:24,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:24,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-11 00:23:24,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956655090] [2021-10-11 00:23:24,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:24,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:24,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:24,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:24,628 INFO L87 Difference]: Start difference. First operand 1581 states and 1901 transitions. Second operand 3 states. [2021-10-11 00:23:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:24,999 INFO L93 Difference]: Finished difference Result 2868 states and 3449 transitions. [2021-10-11 00:23:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:25,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 00:23:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:25,008 INFO L225 Difference]: With dead ends: 2868 [2021-10-11 00:23:25,008 INFO L226 Difference]: Without dead ends: 1289 [2021-10-11 00:23:25,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-10-11 00:23:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1289. [2021-10-11 00:23:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2021-10-11 00:23:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1500 transitions. [2021-10-11 00:23:25,047 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1500 transitions. Word has length 197 [2021-10-11 00:23:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:25,048 INFO L481 AbstractCegarLoop]: Abstraction has 1289 states and 1500 transitions. [2021-10-11 00:23:25,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1500 transitions. [2021-10-11 00:23:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-10-11 00:23:25,053 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:25,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:25,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:25,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:25,279 INFO L82 PathProgramCache]: Analyzing trace with hash 487075866, now seen corresponding path program 1 times [2021-10-11 00:23:25,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:25,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519534421] [2021-10-11 00:23:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:23:25,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519534421] [2021-10-11 00:23:25,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:25,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:23:25,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402096649] [2021-10-11 00:23:25,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:25,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:25,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:25,421 INFO L87 Difference]: Start difference. First operand 1289 states and 1500 transitions. Second operand 3 states. [2021-10-11 00:23:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:25,975 INFO L93 Difference]: Finished difference Result 1854 states and 2145 transitions. [2021-10-11 00:23:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:25,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2021-10-11 00:23:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:25,980 INFO L225 Difference]: With dead ends: 1854 [2021-10-11 00:23:25,980 INFO L226 Difference]: Without dead ends: 716 [2021-10-11 00:23:25,982 INFO L677 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 [2021-10-11 00:23:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-11 00:23:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-10-11 00:23:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2021-10-11 00:23:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 789 transitions. [2021-10-11 00:23:25,999 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 789 transitions. Word has length 208 [2021-10-11 00:23:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:25,999 INFO L481 AbstractCegarLoop]: Abstraction has 716 states and 789 transitions. [2021-10-11 00:23:25,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 789 transitions. [2021-10-11 00:23:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-10-11 00:23:26,003 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:26,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:26,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:23:26,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:26,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1276765747, now seen corresponding path program 1 times [2021-10-11 00:23:26,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:26,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919474919] [2021-10-11 00:23:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 00:23:26,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919474919] [2021-10-11 00:23:26,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006863947] [2021-10-11 00:23:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:26,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 00:23:26,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:26,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-11 00:23:26,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218601714] [2021-10-11 00:23:26,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:26,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:26,439 INFO L87 Difference]: Start difference. First operand 716 states and 789 transitions. Second operand 3 states. [2021-10-11 00:23:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:26,879 INFO L93 Difference]: Finished difference Result 1575 states and 1756 transitions. [2021-10-11 00:23:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:26,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2021-10-11 00:23:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:26,885 INFO L225 Difference]: With dead ends: 1575 [2021-10-11 00:23:26,885 INFO L226 Difference]: Without dead ends: 1001 [2021-10-11 00:23:26,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-10-11 00:23:26,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 997. [2021-10-11 00:23:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 00:23:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1099 transitions. [2021-10-11 00:23:26,924 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1099 transitions. Word has length 218 [2021-10-11 00:23:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:26,925 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1099 transitions. [2021-10-11 00:23:26,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1099 transitions. [2021-10-11 00:23:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-10-11 00:23:26,929 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:26,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:27,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:27,146 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash -192429443, now seen corresponding path program 1 times [2021-10-11 00:23:27,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:27,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877555423] [2021-10-11 00:23:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 00:23:27,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877555423] [2021-10-11 00:23:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925341016] [2021-10-11 00:23:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:27,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:27,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 00:23:27,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:23:27,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-11 00:23:27,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214311116] [2021-10-11 00:23:27,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:27,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:27,666 INFO L87 Difference]: Start difference. First operand 997 states and 1099 transitions. Second operand 3 states. [2021-10-11 00:23:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:28,144 INFO L93 Difference]: Finished difference Result 1852 states and 2051 transitions. [2021-10-11 00:23:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:28,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2021-10-11 00:23:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:28,152 INFO L225 Difference]: With dead ends: 1852 [2021-10-11 00:23:28,152 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 00:23:28,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:23:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 00:23:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 00:23:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 00:23:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1076 transitions. [2021-10-11 00:23:28,176 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1076 transitions. Word has length 222 [2021-10-11 00:23:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:28,177 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1076 transitions. [2021-10-11 00:23:28,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1076 transitions. [2021-10-11 00:23:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-10-11 00:23:28,181 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:28,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 00:23:28,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 00:23:28,395 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2089780709, now seen corresponding path program 1 times [2021-10-11 00:23:28,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:28,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471676734] [2021-10-11 00:23:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 00:23:28,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471676734] [2021-10-11 00:23:28,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:28,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:23:28,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187795606] [2021-10-11 00:23:28,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:23:28,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:28,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:23:28,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:23:28,527 INFO L87 Difference]: Start difference. First operand 997 states and 1076 transitions. Second operand 3 states. [2021-10-11 00:23:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:29,010 INFO L93 Difference]: Finished difference Result 2271 states and 2475 transitions. [2021-10-11 00:23:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:23:29,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2021-10-11 00:23:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:29,011 INFO L225 Difference]: With dead ends: 2271 [2021-10-11 00:23:29,011 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:23:29,013 INFO L677 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 [2021-10-11 00:23:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:23:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:23:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:23:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:23:29,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2021-10-11 00:23:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:29,014 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:29,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:23:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:23:29,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:23:29,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:23:29,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:23:29,174 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-10-11 00:23:29,289 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L433-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 00:23:29,292 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L436-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,293 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L439-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L308(lines 308 317) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L308-2(lines 308 317) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 00:23:29,294 INFO L262 CegarLoopResult]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L442-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L575(line 575) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L511-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L445-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L578(line 578) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L248(lines 248 256) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L248-2(lines 248 256) no Hoare annotation was computed. [2021-10-11 00:23:29,295 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L514-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L583-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 00:23:29,296 INFO L262 CegarLoopResult]: For program point L584(line 584) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L586-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L454-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,297 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,298 INFO L262 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L391(lines 391 397) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L325(lines 325 336) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L391-2(lines 391 397) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L325-2(lines 325 336) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2021-10-11 00:23:29,299 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L593(line 593) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2021-10-11 00:23:29,300 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 527) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L595-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L463-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,301 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L596(line 596) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,302 INFO L262 CegarLoopResult]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L599(line 599) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,303 INFO L262 CegarLoopResult]: For program point L535-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L602(line 602) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L272(lines 272 284) no Hoare annotation was computed. [2021-10-11 00:23:29,304 INFO L262 CegarLoopResult]: For program point L272-2(lines 272 284) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L538-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L605(line 605) no Hoare annotation was computed. [2021-10-11 00:23:29,305 INFO L262 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L342(lines 342 345) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L342-2(lines 342 345) no Hoare annotation was computed. [2021-10-11 00:23:29,306 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 00:23:29,307 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 0)) (.cse5 (= ~a11~0 0)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1)) (.cse1 (= ~a11~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse0 .cse5 .cse2) (and (<= 9 ~a28~0) .cse4 .cse1 .cse2 (<= ~a25~0 0) .cse3) (and .cse4 (<= 8 ~a17~0) .cse1 .cse2 .cse3) (and (= ~a25~0 ~a11~0) .cse4 (<= ~a28~0 7) .cse1 .cse2))) [2021-10-11 00:23:29,307 INFO L262 CegarLoopResult]: For program point L541-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,307 INFO L262 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,307 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 00:23:29,307 INFO L262 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L213(lines 213 220) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L213-2(lines 213 220) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L544-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,308 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L348(lines 348 357) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L348-2(lines 348 357) no Hoare annotation was computed. [2021-10-11 00:23:29,309 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L547-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L85(lines 85 90) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L85-2(lines 85 90) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 00:23:29,310 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 0)) (.cse5 (= ~a11~0 0)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1)) (.cse1 (= ~a11~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse0 .cse5 .cse2) (and (<= 9 ~a28~0) .cse4 .cse1 .cse2 (<= ~a25~0 0) .cse3) (and .cse4 (<= 8 ~a17~0) .cse1 .cse2 .cse3) (and (= ~a25~0 ~a11~0) .cse4 (<= ~a28~0 7) .cse1 .cse2))) [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 00:23:29,311 INFO L262 CegarLoopResult]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L93-2(lines 93 99) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L424(lines 424 426) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L424-2(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 00:23:29,312 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L427-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L562-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L430-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 00:23:29,313 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 00:23:29,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:29 BoogieIcfgContainer [2021-10-11 00:23:29,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:29,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:29,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:29,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:29,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:17" (3/4) ... [2021-10-11 00:23:29,337 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:23:29,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 00:23:29,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:23:29,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:29,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:23:29,517 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1022338-3fdb-4c34-91ad-c99762fff84d/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:29,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:29,519 INFO L168 Benchmark]: Toolchain (without parser) took 14914.81 ms. Allocated memory was 115.3 MB in the beginning and 343.9 MB in the end (delta: 228.6 MB). Free memory was 82.9 MB in the beginning and 145.8 MB in the end (delta: -62.9 MB). Peak memory consumption was 166.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,519 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 83.9 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:29,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.16 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 77.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.59 ms. Allocated memory is still 115.3 MB. Free memory was 77.0 MB in the beginning and 71.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,521 INFO L168 Benchmark]: Boogie Preprocessor took 91.42 ms. Allocated memory is still 115.3 MB. Free memory was 71.5 MB in the beginning and 67.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,521 INFO L168 Benchmark]: RCFGBuilder took 1585.52 ms. Allocated memory is still 115.3 MB. Free memory was 67.3 MB in the beginning and 51.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,522 INFO L168 Benchmark]: TraceAbstraction took 12262.87 ms. Allocated memory was 115.3 MB in the beginning and 343.9 MB in the end (delta: 228.6 MB). Free memory was 50.7 MB in the beginning and 160.5 MB in the end (delta: -109.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,522 INFO L168 Benchmark]: Witness Printer took 184.58 ms. Allocated memory is still 343.9 MB. Free memory was 160.5 MB in the beginning and 145.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:29,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 83.9 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.16 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 77.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 125.59 ms. Allocated memory is still 115.3 MB. Free memory was 77.0 MB in the beginning and 71.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.42 ms. Allocated memory is still 115.3 MB. Free memory was 71.5 MB in the beginning and 67.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1585.52 ms. Allocated memory is still 115.3 MB. Free memory was 67.3 MB in the beginning and 51.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12262.87 ms. Allocated memory was 115.3 MB in the beginning and 343.9 MB in the end (delta: 228.6 MB). Free memory was 50.7 MB in the beginning and 160.5 MB in the end (delta: -109.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 16.1 GB. * Witness Printer took 184.58 ms. Allocated memory is still 343.9 MB. Free memory was 160.5 MB in the beginning and 145.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a19 <= 0 && a11 == 1) && a17 <= 8) && a28 <= 10) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) || (((((9 <= a28 && a19 == 1) && a11 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10)) || ((((a19 == 1 && 8 <= a17) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a28 <= 7) && a11 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a19 <= 0 && a11 == 1) && a17 <= 8) && a28 <= 10) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || ((a19 <= 0 && a11 == 0) && a17 <= 8)) || (((((9 <= a28 && a19 == 1) && a11 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10)) || ((((a19 == 1 && 8 <= a17) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a28 <= 7) && a11 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1291 SDtfs, 1336 SDslu, 146 SDs, 0 SdLazy, 3809 SolverSat, 630 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 930 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 571 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 171 HoareAnnotationTreeSize, 3 FomulaSimplifications, 456 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 2775 NumberOfCodeBlocks, 2775 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2759 ConstructedInterpolants, 0 QuantifiedInterpolants, 1103955 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1671 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 1222/1256 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...