./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be --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 c0f41b7d074691792fd10e7dba36f11652ac022c2313237070654cd8c5fa3312 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:48:44,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:48:44,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:48:44,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:48:44,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:48:44,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:48:44,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:48:44,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:48:44,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:48:44,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:48:44,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:48:44,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:48:44,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:48:44,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:48:44,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:48:44,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:48:44,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:48:44,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:48:44,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:48:44,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:48:44,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:48:44,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:48:44,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:48:44,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:48:44,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:48:44,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:48:44,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:48:44,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:48:44,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:48:44,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:48:44,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:48:44,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:48:45,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:48:45,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:48:45,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:48:45,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:48:45,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:48:45,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:48:45,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:48:45,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:48:45,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:48:45,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:48:45,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:48:45,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:48:45,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:48:45,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:48:45,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:48:45,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:48:45,048 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:48:45,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:48:45,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:48:45,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:48:45,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:48:45,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:48:45,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:48:45,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:48:45,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:48:45,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:48:45,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:48:45,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:48:45,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:48:45,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:48:45,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:48:45,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:48:45,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:48:45,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:48:45,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:48:45,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:48:45,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:48:45,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:48:45,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:48:45,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:48:45,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:48:45,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:48:45,056 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_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f41b7d074691792fd10e7dba36f11652ac022c2313237070654cd8c5fa3312 [2021-10-21 19:48:45,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:48:45,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:48:45,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:48:45,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:48:45,378 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:48:45,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2021-10-21 19:48:45,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/data/c58b63e43/014631ea078d42a59862f0732a3a8014/FLAG750869e44 [2021-10-21 19:48:46,200 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:48:46,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2021-10-21 19:48:46,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/data/c58b63e43/014631ea078d42a59862f0732a3a8014/FLAG750869e44 [2021-10-21 19:48:46,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/data/c58b63e43/014631ea078d42a59862f0732a3a8014 [2021-10-21 19:48:46,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:48:46,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:48:46,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:48:46,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:48:46,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:48:46,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:48:46" (1/1) ... [2021-10-21 19:48:46,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76611d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:46, skipping insertion in model container [2021-10-21 19:48:46,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:48:46" (1/1) ... [2021-10-21 19:48:46,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:48:46,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:48:46,873 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_28988907-dd6e-4db0-8b1c-9daa56598e04/sv-benchmarks/c/eca-rers2012/Problem01_label02.c[16747,16760] [2021-10-21 19:48:46,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:48:46,990 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:48:47,156 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_28988907-dd6e-4db0-8b1c-9daa56598e04/sv-benchmarks/c/eca-rers2012/Problem01_label02.c[16747,16760] [2021-10-21 19:48:47,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:48:47,196 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:48:47,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47 WrapperNode [2021-10-21 19:48:47,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:48:47,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:48:47,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:48:47,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:48:47,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:48:47,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:48:47,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:48:47,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:48:47,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:48:47,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:48:47,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:48:47,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:48:47,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (1/1) ... [2021-10-21 19:48:47,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:48:47,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:47,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:48:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:48:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:48:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:48:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:48:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:48:48,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:48:48,848 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:48:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:48:48 BoogieIcfgContainer [2021-10-21 19:48:48,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:48:48,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:48:48,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:48:48,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:48:48,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:48:46" (1/3) ... [2021-10-21 19:48:48,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638f8821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:48:48, skipping insertion in model container [2021-10-21 19:48:48,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:48:47" (2/3) ... [2021-10-21 19:48:48,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638f8821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:48:48, skipping insertion in model container [2021-10-21 19:48:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:48:48" (3/3) ... [2021-10-21 19:48:48,866 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2021-10-21 19:48:48,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:48:48,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:48:48,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:48:48,975 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 [2021-10-21 19:48:48,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:48:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 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) [2021-10-21 19:48:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-21 19:48:49,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:49,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:49,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -776841673, now seen corresponding path program 1 times [2021-10-21 19:48:49,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:49,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345406200] [2021-10-21 19:48:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:49,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:49,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:49,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345406200] [2021-10-21 19:48:49,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345406200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:49,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:49,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:48:49,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113095595] [2021-10-21 19:48:49,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:49,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:49,532 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2021-10-21 19:48:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:50,363 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2021-10-21 19:48:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-21 19:48:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:50,394 INFO L225 Difference]: With dead ends: 528 [2021-10-21 19:48:50,394 INFO L226 Difference]: Without dead ends: 266 [2021-10-21 19:48:50,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-21 19:48:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-21 19:48:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4566037735849056) internal successors, (386), 265 states have internal predecessors, (386), 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) [2021-10-21 19:48:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 386 transitions. [2021-10-21 19:48:50,457 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 386 transitions. Word has length 90 [2021-10-21 19:48:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:50,458 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 386 transitions. [2021-10-21 19:48:50,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2021-10-21 19:48:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 386 transitions. [2021-10-21 19:48:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-21 19:48:50,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:50,464 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:50,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:48:50,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:50,466 INFO L82 PathProgramCache]: Analyzing trace with hash 904352266, now seen corresponding path program 1 times [2021-10-21 19:48:50,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:50,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085129078] [2021-10-21 19:48:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:50,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:50,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:50,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085129078] [2021-10-21 19:48:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085129078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:50,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:48:50,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929453440] [2021-10-21 19:48:50,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:50,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:50,568 INFO L87 Difference]: Start difference. First operand 266 states and 386 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2021-10-21 19:48:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:51,014 INFO L93 Difference]: Finished difference Result 792 states and 1153 transitions. [2021-10-21 19:48:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-21 19:48:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:51,018 INFO L225 Difference]: With dead ends: 792 [2021-10-21 19:48:51,018 INFO L226 Difference]: Without dead ends: 528 [2021-10-21 19:48:51,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-21 19:48:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-10-21 19:48:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3795066413662238) internal successors, (727), 527 states have internal predecessors, (727), 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) [2021-10-21 19:48:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 727 transitions. [2021-10-21 19:48:51,076 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 727 transitions. Word has length 96 [2021-10-21 19:48:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:51,077 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 727 transitions. [2021-10-21 19:48:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2021-10-21 19:48:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 727 transitions. [2021-10-21 19:48:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-21 19:48:51,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:51,082 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:51,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:48:51,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:51,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1983827210, now seen corresponding path program 1 times [2021-10-21 19:48:51,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:51,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210632894] [2021-10-21 19:48:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:51,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:48:51,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:51,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210632894] [2021-10-21 19:48:51,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210632894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:51,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:51,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:48:51,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103003276] [2021-10-21 19:48:51,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:51,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:51,228 INFO L87 Difference]: Start difference. First operand 528 states and 727 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2021-10-21 19:48:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:51,816 INFO L93 Difference]: Finished difference Result 1578 states and 2176 transitions. [2021-10-21 19:48:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:51,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-21 19:48:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:51,825 INFO L225 Difference]: With dead ends: 1578 [2021-10-21 19:48:51,826 INFO L226 Difference]: Without dead ends: 1052 [2021-10-21 19:48:51,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-21 19:48:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 659. [2021-10-21 19:48:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.3768996960486322) internal successors, (906), 658 states have internal predecessors, (906), 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) [2021-10-21 19:48:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 906 transitions. [2021-10-21 19:48:51,860 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 906 transitions. Word has length 97 [2021-10-21 19:48:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:51,861 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 906 transitions. [2021-10-21 19:48:51,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2021-10-21 19:48:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 906 transitions. [2021-10-21 19:48:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-21 19:48:51,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:51,869 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:51,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:48:51,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash -963864069, now seen corresponding path program 1 times [2021-10-21 19:48:51,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:51,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879445968] [2021-10-21 19:48:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:51,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:52,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:52,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879445968] [2021-10-21 19:48:52,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879445968] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:52,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:52,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:48:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095934476] [2021-10-21 19:48:52,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:52,032 INFO L87 Difference]: Start difference. First operand 659 states and 906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-10-21 19:48:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:52,582 INFO L93 Difference]: Finished difference Result 1578 states and 2156 transitions. [2021-10-21 19:48:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-21 19:48:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:52,590 INFO L225 Difference]: With dead ends: 1578 [2021-10-21 19:48:52,590 INFO L226 Difference]: Without dead ends: 921 [2021-10-21 19:48:52,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-10-21 19:48:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2021-10-21 19:48:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.308695652173913) internal successors, (1204), 920 states have internal predecessors, (1204), 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) [2021-10-21 19:48:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1204 transitions. [2021-10-21 19:48:52,630 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1204 transitions. Word has length 103 [2021-10-21 19:48:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:52,630 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1204 transitions. [2021-10-21 19:48:52,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-10-21 19:48:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1204 transitions. [2021-10-21 19:48:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-21 19:48:52,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:52,637 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:52,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:48:52,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -887722715, now seen corresponding path program 1 times [2021-10-21 19:48:52,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:52,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623326664] [2021-10-21 19:48:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:52,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 19:48:52,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:52,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623326664] [2021-10-21 19:48:52,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623326664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:52,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:52,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:48:52,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347681984] [2021-10-21 19:48:52,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:52,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:52,746 INFO L87 Difference]: Start difference. First operand 921 states and 1204 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-21 19:48:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:53,308 INFO L93 Difference]: Finished difference Result 2364 states and 3056 transitions. [2021-10-21 19:48:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-10-21 19:48:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:53,318 INFO L225 Difference]: With dead ends: 2364 [2021-10-21 19:48:53,318 INFO L226 Difference]: Without dead ends: 1445 [2021-10-21 19:48:53,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-10-21 19:48:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1183. [2021-10-21 19:48:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.2859560067681894) internal successors, (1520), 1182 states have internal predecessors, (1520), 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) [2021-10-21 19:48:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1520 transitions. [2021-10-21 19:48:53,384 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1520 transitions. Word has length 116 [2021-10-21 19:48:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:53,384 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1520 transitions. [2021-10-21 19:48:53,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-21 19:48:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1520 transitions. [2021-10-21 19:48:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-21 19:48:53,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:53,391 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:53,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:48:53,392 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2095190628, now seen corresponding path program 1 times [2021-10-21 19:48:53,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:53,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996350766] [2021-10-21 19:48:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:53,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 19:48:53,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:53,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996350766] [2021-10-21 19:48:53,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996350766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:53,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:53,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:48:53,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653252115] [2021-10-21 19:48:53,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:53,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:53,498 INFO L87 Difference]: Start difference. First operand 1183 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2021-10-21 19:48:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:54,053 INFO L93 Difference]: Finished difference Result 2495 states and 3205 transitions. [2021-10-21 19:48:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-21 19:48:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:54,063 INFO L225 Difference]: With dead ends: 2495 [2021-10-21 19:48:54,063 INFO L226 Difference]: Without dead ends: 1314 [2021-10-21 19:48:54,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:48:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-10-21 19:48:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-10-21 19:48:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.2711348057882712) internal successors, (1669), 1313 states have internal predecessors, (1669), 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) [2021-10-21 19:48:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1669 transitions. [2021-10-21 19:48:54,112 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1669 transitions. Word has length 118 [2021-10-21 19:48:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:54,112 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1669 transitions. [2021-10-21 19:48:54,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2021-10-21 19:48:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1669 transitions. [2021-10-21 19:48:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-21 19:48:54,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:54,117 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:54,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:48:54,117 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:54,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1811589588, now seen corresponding path program 1 times [2021-10-21 19:48:54,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:54,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179672871] [2021-10-21 19:48:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:54,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 19:48:54,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:54,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179672871] [2021-10-21 19:48:54,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179672871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:54,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:48:54,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:48:54,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999552198] [2021-10-21 19:48:54,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:48:54,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:48:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:48:54,195 INFO L87 Difference]: Start difference. First operand 1314 states and 1669 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-21 19:48:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:55,015 INFO L93 Difference]: Finished difference Result 3019 states and 3777 transitions. [2021-10-21 19:48:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:48:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-21 19:48:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:55,027 INFO L225 Difference]: With dead ends: 3019 [2021-10-21 19:48:55,027 INFO L226 Difference]: Without dead ends: 1707 [2021-10-21 19:48:55,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:48:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-21 19:48:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2021-10-21 19:48:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.2412698412698413) internal successors, (1955), 1575 states have internal predecessors, (1955), 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) [2021-10-21 19:48:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1955 transitions. [2021-10-21 19:48:55,086 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1955 transitions. Word has length 122 [2021-10-21 19:48:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:55,086 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 1955 transitions. [2021-10-21 19:48:55,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-21 19:48:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1955 transitions. [2021-10-21 19:48:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-21 19:48:55,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:55,091 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:55,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:48:55,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash 650221427, now seen corresponding path program 1 times [2021-10-21 19:48:55,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:55,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875030402] [2021-10-21 19:48:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:55,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:55,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875030402] [2021-10-21 19:48:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875030402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570120639] [2021-10-21 19:48:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:55,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:55,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:55,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:55,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:48:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:55,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:48:55,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:48:55,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570120639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:55,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:55,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-21 19:48:55,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645882142] [2021-10-21 19:48:55,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:55,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:48:55,988 INFO L87 Difference]: Start difference. First operand 1576 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-10-21 19:48:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:56,492 INFO L93 Difference]: Finished difference Result 3674 states and 4578 transitions. [2021-10-21 19:48:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-10-21 19:48:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:56,506 INFO L225 Difference]: With dead ends: 3674 [2021-10-21 19:48:56,506 INFO L226 Difference]: Without dead ends: 2100 [2021-10-21 19:48:56,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:48:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-10-21 19:48:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2021-10-21 19:48:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.217479674796748) internal successors, (2396), 1968 states have internal predecessors, (2396), 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) [2021-10-21 19:48:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2396 transitions. [2021-10-21 19:48:56,575 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2396 transitions. Word has length 140 [2021-10-21 19:48:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:56,575 INFO L470 AbstractCegarLoop]: Abstraction has 1969 states and 2396 transitions. [2021-10-21 19:48:56,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-10-21 19:48:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2396 transitions. [2021-10-21 19:48:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-21 19:48:56,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:56,582 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:56,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:56,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:56,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1361137988, now seen corresponding path program 1 times [2021-10-21 19:48:56,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:56,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144402604] [2021-10-21 19:48:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:56,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-21 19:48:56,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:56,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144402604] [2021-10-21 19:48:56,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144402604] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:56,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428164001] [2021-10-21 19:48:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:56,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:56,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:56,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:48:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:48:57,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-21 19:48:57,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428164001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:57,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:57,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-21 19:48:57,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493115747] [2021-10-21 19:48:57,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:57,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:48:57,660 INFO L87 Difference]: Start difference. First operand 1969 states and 2396 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-21 19:48:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:58,177 INFO L93 Difference]: Finished difference Result 4460 states and 5459 transitions. [2021-10-21 19:48:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:48:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-10-21 19:48:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:58,195 INFO L225 Difference]: With dead ends: 4460 [2021-10-21 19:48:58,195 INFO L226 Difference]: Without dead ends: 2493 [2021-10-21 19:48:58,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:48:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-10-21 19:48:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2231. [2021-10-21 19:48:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 1.2080717488789237) internal successors, (2694), 2230 states have internal predecessors, (2694), 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) [2021-10-21 19:48:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2694 transitions. [2021-10-21 19:48:58,276 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2694 transitions. Word has length 163 [2021-10-21 19:48:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:58,277 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2694 transitions. [2021-10-21 19:48:58,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-10-21 19:48:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2694 transitions. [2021-10-21 19:48:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-21 19:48:58,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:58,285 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:58,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:58,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 19:48:58,511 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:48:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1645727001, now seen corresponding path program 1 times [2021-10-21 19:48:58,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:58,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525554721] [2021-10-21 19:48:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:58,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:58,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:58,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525554721] [2021-10-21 19:48:58,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525554721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:58,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097682117] [2021-10-21 19:48:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:58,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:58,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:58,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:58,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:48:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:48:59,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:48:59,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097682117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:48:59,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:59,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-21 19:48:59,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760813363] [2021-10-21 19:48:59,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:48:59,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:48:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:48:59,532 INFO L87 Difference]: Start difference. First operand 2231 states and 2694 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-10-21 19:49:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:00,086 INFO L93 Difference]: Finished difference Result 5901 states and 7135 transitions. [2021-10-21 19:49:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:49:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-10-21 19:49:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:00,110 INFO L225 Difference]: With dead ends: 5901 [2021-10-21 19:49:00,110 INFO L226 Difference]: Without dead ends: 3672 [2021-10-21 19:49:00,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:49:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-10-21 19:49:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3410. [2021-10-21 19:49:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.1959518920504546) internal successors, (4077), 3409 states have internal predecessors, (4077), 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) [2021-10-21 19:49:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4077 transitions. [2021-10-21 19:49:00,220 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4077 transitions. Word has length 176 [2021-10-21 19:49:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:00,221 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 4077 transitions. [2021-10-21 19:49:00,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2021-10-21 19:49:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4077 transitions. [2021-10-21 19:49:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-21 19:49:00,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:49:00,232 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:49:00,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:00,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:00,449 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:49:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash 347086668, now seen corresponding path program 1 times [2021-10-21 19:49:00,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:00,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695682463] [2021-10-21 19:49:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:00,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-10-21 19:49:00,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:00,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695682463] [2021-10-21 19:49:00,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695682463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:49:00,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:49:00,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:49:00,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664344679] [2021-10-21 19:49:00,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:49:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:49:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:49:00,534 INFO L87 Difference]: Start difference. First operand 3410 states and 4077 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-10-21 19:49:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:01,095 INFO L93 Difference]: Finished difference Result 7211 states and 8617 transitions. [2021-10-21 19:49:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:49:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-10-21 19:49:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:01,119 INFO L225 Difference]: With dead ends: 7211 [2021-10-21 19:49:01,119 INFO L226 Difference]: Without dead ends: 3541 [2021-10-21 19:49:01,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:49:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-10-21 19:49:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3148. [2021-10-21 19:49:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3147 states have (on average 1.1137591356847791) internal successors, (3505), 3147 states have internal predecessors, (3505), 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) [2021-10-21 19:49:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 3505 transitions. [2021-10-21 19:49:01,241 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 3505 transitions. Word has length 201 [2021-10-21 19:49:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 3505 transitions. [2021-10-21 19:49:01,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-10-21 19:49:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 3505 transitions. [2021-10-21 19:49:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-10-21 19:49:01,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:49:01,254 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:49:01,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:49:01,255 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:49:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:01,256 INFO L82 PathProgramCache]: Analyzing trace with hash 351373933, now seen corresponding path program 1 times [2021-10-21 19:49:01,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:01,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2333968] [2021-10-21 19:49:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:01,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 120 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-21 19:49:01,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:01,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2333968] [2021-10-21 19:49:01,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2333968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:49:01,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442238951] [2021-10-21 19:49:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:01,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:49:01,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:49:01,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:49:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:01,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:49:01,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:49:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-10-21 19:49:02,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442238951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:49:02,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:49:02,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-21 19:49:02,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355563114] [2021-10-21 19:49:02,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:49:02,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:49:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:02,430 INFO L87 Difference]: Start difference. First operand 3148 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-10-21 19:49:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:02,918 INFO L93 Difference]: Finished difference Result 6818 states and 7604 transitions. [2021-10-21 19:49:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:49:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-10-21 19:49:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:02,941 INFO L225 Difference]: With dead ends: 6818 [2021-10-21 19:49:02,941 INFO L226 Difference]: Without dead ends: 3672 [2021-10-21 19:49:02,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-10-21 19:49:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3410. [2021-10-21 19:49:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.1003226752713406) internal successors, (3751), 3409 states have internal predecessors, (3751), 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) [2021-10-21 19:49:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 3751 transitions. [2021-10-21 19:49:03,041 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 3751 transitions. Word has length 208 [2021-10-21 19:49:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:03,042 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 3751 transitions. [2021-10-21 19:49:03,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-10-21 19:49:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 3751 transitions. [2021-10-21 19:49:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-10-21 19:49:03,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:49:03,055 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:49:03,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:03,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:03,281 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:49:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash -481755768, now seen corresponding path program 1 times [2021-10-21 19:49:03,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:03,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791020187] [2021-10-21 19:49:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:03,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-10-21 19:49:03,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:03,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791020187] [2021-10-21 19:49:03,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791020187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:49:03,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875214211] [2021-10-21 19:49:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:03,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:49:03,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:49:03,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:49:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:03,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:49:03,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:49:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-10-21 19:49:04,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875214211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:49:04,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:49:04,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-21 19:49:04,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954391062] [2021-10-21 19:49:04,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:49:04,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:49:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:04,418 INFO L87 Difference]: Start difference. First operand 3410 states and 3751 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-10-21 19:49:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:04,928 INFO L93 Difference]: Finished difference Result 7080 states and 7787 transitions. [2021-10-21 19:49:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:49:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-10-21 19:49:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:04,950 INFO L225 Difference]: With dead ends: 7080 [2021-10-21 19:49:04,951 INFO L226 Difference]: Without dead ends: 3541 [2021-10-21 19:49:04,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-10-21 19:49:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3410. [2021-10-21 19:49:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.0865356409504254) internal successors, (3704), 3409 states have internal predecessors, (3704), 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) [2021-10-21 19:49:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 3704 transitions. [2021-10-21 19:49:05,078 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 3704 transitions. Word has length 247 [2021-10-21 19:49:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:05,079 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 3704 transitions. [2021-10-21 19:49:05,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-10-21 19:49:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 3704 transitions. [2021-10-21 19:49:05,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-10-21 19:49:05,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:49:05,092 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:49:05,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:05,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:49:05,317 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:49:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2037707778, now seen corresponding path program 1 times [2021-10-21 19:49:05,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:05,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563633068] [2021-10-21 19:49:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:05,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 184 proven. 10 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-10-21 19:49:05,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:05,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563633068] [2021-10-21 19:49:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563633068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:49:05,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577861002] [2021-10-21 19:49:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:05,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:49:05,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:49:05,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:49:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:49:06,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:49:06,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:49:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-21 19:49:06,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577861002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:49:06,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:49:06,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-21 19:49:06,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846589767] [2021-10-21 19:49:06,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:49:06,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:06,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:49:06,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:06,731 INFO L87 Difference]: Start difference. First operand 3410 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-10-21 19:49:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:07,238 INFO L93 Difference]: Finished difference Result 6816 states and 7409 transitions. [2021-10-21 19:49:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:49:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2021-10-21 19:49:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:07,240 INFO L225 Difference]: With dead ends: 6816 [2021-10-21 19:49:07,240 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:49:07,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:49:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:49:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:49:07,248 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) [2021-10-21 19:49:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:49:07,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2021-10-21 19:49:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:07,249 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:49:07,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-10-21 19:49:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:49:07,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:49:07,253 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:07,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:07,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:49:07,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:49:07,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:07,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:07,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:08,329 INFO L857 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-10-21 19:49:08,329 INFO L857 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2021-10-21 19:49:08,329 INFO L857 garLoopResultBuilder]: For program point L498(line 498) no Hoare annotation was computed. [2021-10-21 19:49:08,329 INFO L857 garLoopResultBuilder]: For program point L465(line 465) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,330 INFO L857 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,331 INFO L857 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,331 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,331 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-10-21 19:49:08,331 INFO L857 garLoopResultBuilder]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,331 INFO L857 garLoopResultBuilder]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L567(line 567) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-10-21 19:49:08,332 INFO L857 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-10-21 19:49:08,333 INFO L857 garLoopResultBuilder]: For program point L435(line 435) no Hoare annotation was computed. [2021-10-21 19:49:08,333 INFO L857 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-10-21 19:49:08,333 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-21 19:49:08,333 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-21 19:49:08,333 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-21 19:49:08,334 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-21 19:49:08,334 INFO L857 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,334 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,334 INFO L857 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,334 INFO L857 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-21 19:49:08,335 INFO L857 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2021-10-21 19:49:08,336 INFO L857 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-10-21 19:49:08,336 INFO L857 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-10-21 19:49:08,336 INFO L857 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-10-21 19:49:08,336 INFO L857 garLoopResultBuilder]: For program point L438(line 438) no Hoare annotation was computed. [2021-10-21 19:49:08,336 INFO L857 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2021-10-21 19:49:08,337 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-21 19:49:08,337 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-21 19:49:08,337 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-21 19:49:08,337 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-21 19:49:08,337 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-21 19:49:08,338 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-21 19:49:08,338 INFO L857 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,338 INFO L857 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,338 INFO L857 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,338 INFO L857 garLoopResultBuilder]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,339 INFO L857 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,339 INFO L857 garLoopResultBuilder]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,339 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-21 19:49:08,339 INFO L857 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2021-10-21 19:49:08,339 INFO L857 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L474(line 474) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L408(line 408) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-21 19:49:08,340 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,341 INFO L857 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,342 INFO L857 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,342 INFO L857 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,342 INFO L857 garLoopResultBuilder]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,342 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-21 19:49:08,342 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-21 19:49:08,343 INFO L857 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2021-10-21 19:49:08,343 INFO L857 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-10-21 19:49:08,343 INFO L857 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2021-10-21 19:49:08,343 INFO L857 garLoopResultBuilder]: For program point L477(line 477) no Hoare annotation was computed. [2021-10-21 19:49:08,343 INFO L857 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L411(line 411) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,344 INFO L857 garLoopResultBuilder]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,345 INFO L857 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,345 INFO L857 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,345 INFO L857 garLoopResultBuilder]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,345 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-21 19:49:08,345 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L513(line 513) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2021-10-21 19:49:08,346 INFO L857 garLoopResultBuilder]: For program point L414(line 414) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-21 19:49:08,347 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-21 19:49:08,348 INFO L857 garLoopResultBuilder]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2021-10-21 19:49:08,348 INFO L857 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,348 INFO L857 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,348 INFO L857 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,348 INFO L857 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,349 INFO L857 garLoopResultBuilder]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:49:08,349 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-21 19:49:08,349 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-21 19:49:08,349 INFO L857 garLoopResultBuilder]: For program point L582(line 582) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L417(line 417) no Hoare annotation was computed. [2021-10-21 19:49:08,350 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-21 19:49:08,351 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse2 (<= ~a8~0 13)) (.cse5 (<= ~a20~0 0)) (.cse0 (= ~a17~0 1)) (.cse4 (<= ~a16~0 4)) (.cse6 (<= 14 ~a8~0)) (.cse1 (= ~a20~0 1))) (or (and (= ~a21~0 1) .cse0 .cse1) (and .cse2 (or (and .cse3 .cse1) (and .cse3 .cse0)) .cse4) (and .cse5 .cse4) (and .cse3 .cse0 .cse1) (and (<= ~a7~0 0) .cse2 .cse4) (and .cse5 .cse6) (and .cse0 .cse4 .cse1) (and (<= 6 ~a16~0) .cse1) (and .cse6 .cse1))) [2021-10-21 19:49:08,351 INFO L857 garLoopResultBuilder]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,351 INFO L857 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2021-10-21 19:49:08,352 INFO L857 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-10-21 19:49:08,353 INFO L857 garLoopResultBuilder]: For program point L486(line 486) no Hoare annotation was computed. [2021-10-21 19:49:08,353 INFO L857 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-10-21 19:49:08,353 INFO L857 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2021-10-21 19:49:08,353 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-21 19:49:08,353 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:49:08,354 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-21 19:49:08,355 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-21 19:49:08,355 INFO L857 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,355 INFO L857 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,355 INFO L857 garLoopResultBuilder]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,355 INFO L857 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,356 INFO L857 garLoopResultBuilder]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,356 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-21 19:49:08,356 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-21 19:49:08,356 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-21 19:49:08,356 INFO L857 garLoopResultBuilder]: For program point L555(line 555) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point L489(line 489) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point L456(line 456) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point L423(line 423) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-21 19:49:08,357 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:49:08,358 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,358 INFO L857 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,358 INFO L857 garLoopResultBuilder]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,358 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,358 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-21 19:49:08,359 INFO L857 garLoopResultBuilder]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,359 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-21 19:49:08,359 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-21 19:49:08,359 INFO L857 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-10-21 19:49:08,359 INFO L857 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L492(line 492) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L426(line 426) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-21 19:49:08,360 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-21 19:49:08,361 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-21 19:49:08,361 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-21 19:49:08,361 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-21 19:49:08,361 INFO L857 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,362 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse2 (<= ~a8~0 13)) (.cse5 (<= ~a20~0 0)) (.cse0 (= ~a17~0 1)) (.cse4 (<= ~a16~0 4)) (.cse6 (<= 14 ~a8~0)) (.cse1 (= ~a20~0 1))) (or (and (= ~a21~0 1) .cse0 .cse1) (and .cse2 (or (and .cse3 .cse1) (and .cse3 .cse0)) .cse4) (and .cse5 .cse4) (and .cse3 .cse0 .cse1) (and (<= ~a7~0 0) .cse2 .cse4) (and .cse5 .cse6) (and .cse0 .cse4 .cse1) (and (<= 6 ~a16~0) .cse1) (and .cse6 .cse1))) [2021-10-21 19:49:08,362 INFO L857 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,362 INFO L857 garLoopResultBuilder]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,362 INFO L857 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,362 INFO L857 garLoopResultBuilder]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,362 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-21 19:49:08,363 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:49:08,363 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 456) no Hoare annotation was computed. [2021-10-21 19:49:08,363 INFO L857 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-10-21 19:49:08,363 INFO L857 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L495(line 495) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L429(line 429) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-21 19:49:08,364 INFO L857 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,365 INFO L857 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,365 INFO L857 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,365 INFO L857 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,365 INFO L857 garLoopResultBuilder]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2021-10-21 19:49:08,366 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-21 19:49:08,366 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-21 19:49:08,366 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-21 19:49:08,366 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-21 19:49:08,371 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:49:08,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:49:08 BoogieIcfgContainer [2021-10-21 19:49:08,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:49:08,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:49:08,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:49:08,395 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:49:08,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:48:48" (3/4) ... [2021-10-21 19:49:08,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:49:08,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:49:08,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:49:08,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:49:08,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:49:08,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:49:08,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:49:08,606 INFO L168 Benchmark]: Toolchain (without parser) took 22173.28 ms. Allocated memory was 96.5 MB in the beginning and 234.9 MB in the end (delta: 138.4 MB). Free memory was 67.7 MB in the beginning and 188.7 MB in the end (delta: -121.0 MB). Peak memory consumption was 148.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,607 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:49:08,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.06 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 40.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.74 ms. Allocated memory is still 96.5 MB. Free memory was 40.7 MB in the beginning and 72.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,608 INFO L168 Benchmark]: Boogie Preprocessor took 97.30 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 67.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,609 INFO L168 Benchmark]: RCFGBuilder took 1443.69 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 50.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,609 INFO L168 Benchmark]: TraceAbstraction took 19540.66 ms. Allocated memory was 96.5 MB in the beginning and 234.9 MB in the end (delta: 138.4 MB). Free memory was 50.2 MB in the beginning and 78.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,610 INFO L168 Benchmark]: Witness Printer took 210.36 ms. Allocated memory is still 234.9 MB. Free memory was 78.6 MB in the beginning and 188.7 MB in the end (delta: -110.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:08,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 759.06 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 40.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.74 ms. Allocated memory is still 96.5 MB. Free memory was 40.7 MB in the beginning and 72.1 MB in the end (delta: -31.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.30 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 67.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1443.69 ms. Allocated memory is still 96.5 MB. Free memory was 67.7 MB in the beginning and 50.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19540.66 ms. Allocated memory was 96.5 MB in the beginning and 234.9 MB in the end (delta: 138.4 MB). Free memory was 50.2 MB in the beginning and 78.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. * Witness Printer took 210.36 ms. Allocated memory is still 234.9 MB. Free memory was 78.6 MB in the beginning and 188.7 MB in the end (delta: -110.2 MB). Peak memory consumption was 17.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 456]: 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 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19411.5ms, OverallIterations: 14, TraceHistogramMax: 7, EmptinessCheckTime: 114.6ms, AutomataDifference: 8296.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 858.6ms, InitialAbstractionConstructionTime: 23.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1259 SDtfs, 1668 SDslu, 77 SDs, 0 SdLazy, 4856 SolverSat, 746 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5631.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1218 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3410occurred in iteration=10, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 911.1ms AutomataMinimizationTime, 14 MinimizatonAttempts, 2227 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 65 NumberOfFragments, 183 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3966 FormulaSimplificationTreeSizeReduction, 164.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 1146 FormulaSimplificationTreeSizeReductionInter, 685.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 376.3ms SsaConstructionTime, 925.2ms SatisfiabilityAnalysisTime, 4845.7ms InterpolantComputationTime, 3315 NumberOfCodeBlocks, 3315 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3295 ConstructedInterpolants, 0 QuantifiedInterpolants, 7803 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2386 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 2905/2993 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: 593]: Loop Invariant Derived loop invariant: (((((((((a21 == 1 && a17 == 1) && a20 == 1) || ((a8 <= 13 && ((a21 <= 0 && a20 == 1) || (a21 <= 0 && a17 == 1))) && a16 <= 4)) || (a20 <= 0 && a16 <= 4)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((a7 <= 0 && a8 <= 13) && a16 <= 4)) || (a20 <= 0 && 14 <= a8)) || ((a17 == 1 && a16 <= 4) && a20 == 1)) || (6 <= a16 && a20 == 1)) || (14 <= a8 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a21 == 1 && a17 == 1) && a20 == 1) || ((a8 <= 13 && ((a21 <= 0 && a20 == 1) || (a21 <= 0 && a17 == 1))) && a16 <= 4)) || (a20 <= 0 && a16 <= 4)) || ((a21 <= 0 && a17 == 1) && a20 == 1)) || ((a7 <= 0 && a8 <= 13) && a16 <= 4)) || (a20 <= 0 && 14 <= a8)) || ((a17 == 1 && a16 <= 4) && a20 == 1)) || (6 <= a16 && a20 == 1)) || (14 <= a8 && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-21 19:49:08,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28988907-dd6e-4db0-8b1c-9daa56598e04/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...