./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Ackermann01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD --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 93bcf8b6df587e0bc8cb137c6415932ffc9083999b1b09826c5b148989ca1a7b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:27:51,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:27:51,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:27:51,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:27:51,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:27:51,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:27:51,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:27:51,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:27:51,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:27:51,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:27:51,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:27:51,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:27:51,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:27:51,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:27:51,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:27:51,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:27:51,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:27:51,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:27:51,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:27:51,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:27:51,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:27:51,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:27:51,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:27:51,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:27:51,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:27:51,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:27:51,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:27:51,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:27:51,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:27:51,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:27:51,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:27:51,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:27:51,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:27:51,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:27:51,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:27:51,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:27:51,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:27:51,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:27:51,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:27:51,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:27:51,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:27:51,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:27:51,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:27:51,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:27:51,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:27:51,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:27:51,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:27:51,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:27:51,573 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:27:51,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:27:51,573 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:27:51,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:27:51,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:27:51,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:27:51,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:27:51,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:27:51,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:27:51,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:27:51,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:27:51,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:27:51,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:27:51,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:27:51,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:27:51,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:27:51,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:51,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:27:51,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:27:51,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:27:51,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:27:51,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:27:51,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:27:51,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:27:51,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:27:51,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:27:51,581 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_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93bcf8b6df587e0bc8cb137c6415932ffc9083999b1b09826c5b148989ca1a7b [2021-10-28 23:27:51,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:27:51,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:27:51,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:27:51,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:27:51,924 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:27:51,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/recursive/Ackermann01-2.c [2021-10-28 23:27:51,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/data/08db17967/2825bee0e6034c89ab69674ce053ac5f/FLAGa31cd6f0e [2021-10-28 23:27:52,601 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:27:52,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/sv-benchmarks/c/recursive/Ackermann01-2.c [2021-10-28 23:27:52,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/data/08db17967/2825bee0e6034c89ab69674ce053ac5f/FLAGa31cd6f0e [2021-10-28 23:27:52,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/data/08db17967/2825bee0e6034c89ab69674ce053ac5f [2021-10-28 23:27:52,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:27:52,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:27:52,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:52,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:27:52,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:27:52,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:52" (1/1) ... [2021-10-28 23:27:52,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222982a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:52, skipping insertion in model container [2021-10-28 23:27:52,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:52" (1/1) ... [2021-10-28 23:27:52,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:27:53,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:27:53,183 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/sv-benchmarks/c/recursive/Ackermann01-2.c[1234,1247] [2021-10-28 23:27:53,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:53,196 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:27:53,213 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/sv-benchmarks/c/recursive/Ackermann01-2.c[1234,1247] [2021-10-28 23:27:53,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:53,229 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:27:53,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53 WrapperNode [2021-10-28 23:27:53,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:53,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:53,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:27:53,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:27:53,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:53,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:27:53,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:27:53,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:27:53,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:27:53,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:27:53,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:27:53,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:27:53,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (1/1) ... [2021-10-28 23:27:53,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:53,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:53,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:53,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:27:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:27:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:27:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2021-10-28 23:27:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2021-10-28 23:27:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:27:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:27:53,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:27:53,664 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:27:53,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:53 BoogieIcfgContainer [2021-10-28 23:27:53,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:27:53,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:27:53,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:27:53,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:27:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:27:52" (1/3) ... [2021-10-28 23:27:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c80559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:53, skipping insertion in model container [2021-10-28 23:27:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:53" (2/3) ... [2021-10-28 23:27:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c80559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:53, skipping insertion in model container [2021-10-28 23:27:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:53" (3/3) ... [2021-10-28 23:27:53,675 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2021-10-28 23:27:53,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:27:53,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:27:53,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:27:53,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:27:53,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:27:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:27:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:27:53,771 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:53,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:53,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2021-10-28 23:27:53,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:53,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842840518] [2021-10-28 23:27:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:53,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:54,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:54,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842840518] [2021-10-28 23:27:54,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842840518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:54,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:27:54,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383754640] [2021-10-28 23:27:54,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:27:54,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:27:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:27:54,193 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:27:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:54,389 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-10-28 23:27:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:27:54,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 23:27:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:54,404 INFO L225 Difference]: With dead ends: 38 [2021-10-28 23:27:54,405 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 23:27:54,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:27:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 23:27:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 23:27:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 23:27:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2021-10-28 23:27:54,472 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2021-10-28 23:27:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:54,474 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-10-28 23:27:54,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:27:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2021-10-28 23:27:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:27:54,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:54,481 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:54,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:27:54,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2021-10-28 23:27:54,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:54,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529585684] [2021-10-28 23:27:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:54,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:27:54,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:54,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529585684] [2021-10-28 23:27:54,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529585684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:54,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:54,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:27:54,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044153739] [2021-10-28 23:27:54,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:27:54,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:27:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:27:54,811 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:27:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:54,998 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-10-28 23:27:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:27:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-28 23:27:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:55,004 INFO L225 Difference]: With dead ends: 29 [2021-10-28 23:27:55,005 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 23:27:55,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:27:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 23:27:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-28 23:27:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-28 23:27:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-10-28 23:27:55,022 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2021-10-28 23:27:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:55,023 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-10-28 23:27:55,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:27:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-10-28 23:27:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:27:55,029 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:55,029 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:55,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:27:55,030 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -445405100, now seen corresponding path program 1 times [2021-10-28 23:27:55,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:55,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372088984] [2021-10-28 23:27:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:55,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 23:27:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:27:55,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:55,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372088984] [2021-10-28 23:27:55,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372088984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:55,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689697058] [2021-10-28 23:27:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:55,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:55,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:55,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:55,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:27:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:55,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:27:55,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:27:55,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689697058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:55,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:27:55,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-10-28 23:27:55,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406163092] [2021-10-28 23:27:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:27:55,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:27:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:27:55,539 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:27:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:55,745 INFO L93 Difference]: Finished difference Result 48 states and 75 transitions. [2021-10-28 23:27:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:27:55,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 25 [2021-10-28 23:27:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:55,754 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:27:55,755 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 23:27:55,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:27:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 23:27:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-28 23:27:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-10-28 23:27:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-10-28 23:27:55,782 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 25 [2021-10-28 23:27:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:55,783 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-10-28 23:27:55,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:27:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-10-28 23:27:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:27:55,789 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:55,789 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:55,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:56,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:56,009 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1893657534, now seen corresponding path program 1 times [2021-10-28 23:27:56,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:56,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725548461] [2021-10-28 23:27:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:56,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-28 23:27:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-28 23:27:56,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:56,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725548461] [2021-10-28 23:27:56,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725548461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:56,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249471165] [2021-10-28 23:27:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:56,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:56,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:56,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:27:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:56,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:27:56,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:27:56,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249471165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:56,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:27:56,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2021-10-28 23:27:56,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53859677] [2021-10-28 23:27:56,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:27:56,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:27:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:27:56,653 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:27:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:57,250 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2021-10-28 23:27:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:27:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2021-10-28 23:27:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:57,255 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:27:57,256 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:27:57,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-10-28 23:27:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:27:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2021-10-28 23:27:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (21), 8 states have call predecessors, (21), 5 states have call successors, (21) [2021-10-28 23:27:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2021-10-28 23:27:57,272 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 32 [2021-10-28 23:27:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:57,273 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2021-10-28 23:27:57,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:27:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2021-10-28 23:27:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:27:57,276 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:57,277 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:57,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:57,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:57,493 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1429337198, now seen corresponding path program 2 times [2021-10-28 23:27:57,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:57,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584683952] [2021-10-28 23:27:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:57,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-28 23:27:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-28 23:27:57,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:57,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584683952] [2021-10-28 23:27:57,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584683952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:57,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535313363] [2021-10-28 23:27:57,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:27:57,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:57,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:57,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:57,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:27:57,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:27:57,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:27:57,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:27:57,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 23:27:58,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535313363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:58,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:27:58,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2021-10-28 23:27:58,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517962013] [2021-10-28 23:27:58,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:27:58,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:27:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:27:58,168 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 23:27:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:58,687 INFO L93 Difference]: Finished difference Result 62 states and 113 transitions. [2021-10-28 23:27:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:27:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-10-28 23:27:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:58,695 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:27:58,696 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 23:27:58,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:27:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 23:27:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 31. [2021-10-28 23:27:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2021-10-28 23:27:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-10-28 23:27:58,713 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 39 [2021-10-28 23:27:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:58,713 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-28 23:27:58,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 23:27:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-10-28 23:27:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:27:58,716 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:58,716 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:58,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:58,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1137182642, now seen corresponding path program 3 times [2021-10-28 23:27:58,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:58,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380817384] [2021-10-28 23:27:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:58,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:27:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-28 23:27:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:27:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 23:27:59,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:59,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380817384] [2021-10-28 23:27:59,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380817384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:59,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794028350] [2021-10-28 23:27:59,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:27:59,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:59,138 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:59,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:27:59,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:27:59,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:27:59,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:27:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-28 23:27:59,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794028350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:59,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:27:59,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-10-28 23:27:59,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877048787] [2021-10-28 23:27:59,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:27:59,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:27:59,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:27:59,456 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (10), 8 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-28 23:27:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:59,862 INFO L93 Difference]: Finished difference Result 78 states and 135 transitions. [2021-10-28 23:27:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:27:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (10), 8 states have call predecessors, (10), 3 states have call successors, (10) Word has length 39 [2021-10-28 23:27:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:59,865 INFO L225 Difference]: With dead ends: 78 [2021-10-28 23:27:59,865 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:27:59,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:27:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:27:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:27:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 8 states have return successors, (35), 15 states have call predecessors, (35), 7 states have call successors, (35) [2021-10-28 23:27:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 78 transitions. [2021-10-28 23:27:59,881 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 78 transitions. Word has length 39 [2021-10-28 23:27:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:59,902 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 78 transitions. [2021-10-28 23:27:59,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (10), 8 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-28 23:27:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 78 transitions. [2021-10-28 23:27:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 23:27:59,906 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:59,906 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:59,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:28:00,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:28:00,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:28:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:28:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash 985301155, now seen corresponding path program 4 times [2021-10-28 23:28:00,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:28:00,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934774185] [2021-10-28 23:28:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:28:00,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:28:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:28:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-10-28 23:28:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 23:28:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-28 23:28:00,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:28:00,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934774185] [2021-10-28 23:28:00,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934774185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:28:00,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778515321] [2021-10-28 23:28:00,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:28:00,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:28:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:28:00,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:28:00,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:28:00,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:28:00,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:28:00,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:28:00,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:28:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-28 23:28:00,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778515321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:28:00,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:28:00,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-28 23:28:00,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936213984] [2021-10-28 23:28:00,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:28:00,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:28:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:28:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:28:00,636 INFO L87 Difference]: Start difference. First operand 50 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-10-28 23:28:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:28:00,686 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2021-10-28 23:28:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:28:00,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 59 [2021-10-28 23:28:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:28:00,688 INFO L225 Difference]: With dead ends: 98 [2021-10-28 23:28:00,689 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 23:28:00,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:28:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 23:28:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 23:28:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 10 states have return successors, (40), 14 states have call predecessors, (40), 7 states have call successors, (40) [2021-10-28 23:28:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 84 transitions. [2021-10-28 23:28:00,704 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 84 transitions. Word has length 59 [2021-10-28 23:28:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:28:00,705 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 84 transitions. [2021-10-28 23:28:00,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-10-28 23:28:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 84 transitions. [2021-10-28 23:28:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 23:28:00,707 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:28:00,708 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:28:00,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:28:00,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:28:00,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:28:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:28:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1971944696, now seen corresponding path program 5 times [2021-10-28 23:28:00,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:28:00,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975060577] [2021-10-28 23:28:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:28:00,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:28:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:28:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-28 23:28:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 23:28:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 23:28:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-10-28 23:28:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-28 23:28:01,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:28:01,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975060577] [2021-10-28 23:28:01,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975060577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:28:01,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735659461] [2021-10-28 23:28:01,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:28:01,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:28:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:28:01,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:28:01,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:28:01,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 23:28:01,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:28:01,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:28:01,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:28:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 97 proven. 37 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-28 23:28:01,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735659461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:28:01,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:28:01,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2021-10-28 23:28:01,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096589119] [2021-10-28 23:28:01,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:28:01,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:28:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:28:01,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:28:01,804 INFO L87 Difference]: Start difference. First operand 53 states and 84 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (19), 13 states have call predecessors, (19), 9 states have call successors, (19) [2021-10-28 23:28:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:28:02,335 INFO L93 Difference]: Finished difference Result 86 states and 171 transitions. [2021-10-28 23:28:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:28:02,337 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (19), 13 states have call predecessors, (19), 9 states have call successors, (19) Word has length 72 [2021-10-28 23:28:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:28:02,338 INFO L225 Difference]: With dead ends: 86 [2021-10-28 23:28:02,338 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:28:02,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 23:28:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:28:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:28:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:28:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:28:02,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2021-10-28 23:28:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:28:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:28:02,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 9 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (19), 13 states have call predecessors, (19), 9 states have call successors, (19) [2021-10-28 23:28:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:28:02,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:28:02,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:28:02,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:28:02,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:28:02,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:28:02,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:28:02,996 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:28:02,996 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:28:02,996 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-10-28 23:28:02,996 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:28:02,996 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:28:02,996 INFO L860 garLoopResultBuilder]: At program point L28(lines 28 48) the Hoare annotation is: true [2021-10-28 23:28:02,997 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2021-10-28 23:28:02,997 INFO L857 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2021-10-28 23:28:02,997 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 47) no Hoare annotation was computed. [2021-10-28 23:28:02,997 INFO L853 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~n~0) [2021-10-28 23:28:02,997 INFO L857 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-10-28 23:28:02,997 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 41) no Hoare annotation was computed. [2021-10-28 23:28:02,998 INFO L857 garLoopResultBuilder]: For program point ackermannEXIT(lines 17 25) no Hoare annotation was computed. [2021-10-28 23:28:02,998 INFO L853 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2021-10-28 23:28:02,998 INFO L857 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-10-28 23:28:02,998 INFO L853 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2021-10-28 23:28:02,998 INFO L853 garLoopResultBuilder]: At program point L24-2(line 24) the Hoare annotation is: (let ((.cse0 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= 2 ackermann_~m) (<= 3 |ackermann_#t~ret8|) .cse0 .cse1) (and .cse0 (<= 2 |ackermann_#t~ret8|) (<= 1 |ackermann_#in~m|) .cse1 (<= |ackermann_#in~m| 1)))) [2021-10-28 23:28:02,999 INFO L860 garLoopResultBuilder]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2021-10-28 23:28:02,999 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2021-10-28 23:28:02,999 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-28 23:28:02,999 INFO L857 garLoopResultBuilder]: For program point L24-3(line 24) no Hoare annotation was computed. [2021-10-28 23:28:02,999 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 23:28:02,999 INFO L857 garLoopResultBuilder]: For program point ackermannFINAL(lines 17 25) no Hoare annotation was computed. [2021-10-28 23:28:03,003 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2021-10-28 23:28:03,005 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:28:03,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:28:03 BoogieIcfgContainer [2021-10-28 23:28:03,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:28:03,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:28:03,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:28:03,016 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:28:03,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:53" (3/4) ... [2021-10-28 23:28:03,038 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:28:03,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2021-10-28 23:28:03,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 23:28:03,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 23:28:03,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:28:03,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:28:03,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:28:03,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:28:03,099 INFO L168 Benchmark]: Toolchain (without parser) took 10136.10 ms. Allocated memory was 111.1 MB in the beginning and 174.1 MB in the end (delta: 62.9 MB). Free memory was 74.0 MB in the beginning and 147.2 MB in the end (delta: -73.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,100 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory was 90.1 MB in the beginning and 90.0 MB in the end (delta: 63.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:28:03,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.28 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 86.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.95 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,101 INFO L168 Benchmark]: Boogie Preprocessor took 25.69 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 84.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:28:03,102 INFO L168 Benchmark]: RCFGBuilder took 372.98 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 74.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,102 INFO L168 Benchmark]: TraceAbstraction took 9347.16 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 73.9 MB in the beginning and 39.1 MB in the end (delta: 34.8 MB). Peak memory consumption was 70.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,103 INFO L168 Benchmark]: Witness Printer took 82.18 ms. Allocated memory was 144.7 MB in the beginning and 174.1 MB in the end (delta: 29.4 MB). Free memory was 39.1 MB in the beginning and 147.2 MB in the end (delta: -108.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:03,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory was 90.1 MB in the beginning and 90.0 MB in the end (delta: 63.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.28 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 86.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.95 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.69 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 84.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 372.98 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 74.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9347.16 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 73.9 MB in the beginning and 39.1 MB in the end (delta: 34.8 MB). Peak memory consumption was 70.2 MB. Max. memory is 16.1 GB. * Witness Printer took 82.18 ms. Allocated memory was 144.7 MB in the beginning and 174.1 MB in the end (delta: 29.4 MB). Free memory was 39.1 MB in the beginning and 147.2 MB in the end (delta: -108.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 202 SDslu, 700 SDs, 0 SdLazy, 1731 SolverSat, 303 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=7, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 110 PreInvPairs, 136 NumberOfFragments, 60 HoareAnnotationTreeSize, 110 FomulaSimplifications, 6992 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 290 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 563 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 1051 SizeOfPredicates, 14 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 776/948 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:28:03,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e97b56c-c3fc-469f-82c4-9b233ddd74b0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...