./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8 --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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:25:21,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:25:21,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:25:21,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:25:21,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:25:21,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:25:21,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:25:21,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:25:21,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:25:21,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:25:21,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:25:21,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:25:21,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:25:21,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:25:21,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:25:21,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:25:21,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:25:21,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:25:21,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:25:21,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:25:21,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:25:21,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:25:21,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:25:21,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:25:21,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:25:21,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:25:21,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:25:21,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:25:21,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:25:21,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:25:21,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:25:21,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:25:21,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:25:21,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:25:21,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:25:21,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:25:21,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:25:21,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:25:21,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:25:21,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:25:21,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:25:21,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:25:21,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:25:21,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:25:21,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:25:21,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:25:21,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:25:21,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:25:21,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:25:21,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:25:21,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:25:21,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:25:21,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:25:21,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:25:21,314 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:25:21,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:25:21,315 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:25:21,315 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2022-12-13 17:25:21,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:25:21,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:25:21,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:25:21,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:25:21,530 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:25:21,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-12-13 17:25:24,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:25:24,190 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:25:24,190 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-12-13 17:25:24,195 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/data/828f3c346/9dc8e5734aea44f296f60cfd41b4e766/FLAG094b0bde5 [2022-12-13 17:25:24,205 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/data/828f3c346/9dc8e5734aea44f296f60cfd41b4e766 [2022-12-13 17:25:24,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:25:24,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:25:24,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:25:24,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:25:24,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:25:24,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f6c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24, skipping insertion in model container [2022-12-13 17:25:24,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:25:24,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:25:24,331 WARN L237 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_fa793435-3386-452f-a4b5-bf55bc36911b/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-12-13 17:25:24,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:25:24,343 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:25:24,354 WARN L237 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_fa793435-3386-452f-a4b5-bf55bc36911b/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-12-13 17:25:24,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:25:24,366 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:25:24,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24 WrapperNode [2022-12-13 17:25:24,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:25:24,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:25:24,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:25:24,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:25:24,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,390 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 17:25:24,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:25:24,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:25:24,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:25:24,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:25:24,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:25:24,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:25:24,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:25:24,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:25:24,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (1/1) ... [2022-12-13 17:25:24,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:25:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:24,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:25:24,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:25:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:25:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:25:24,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:25:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:25:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-12-13 17:25:24,466 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-12-13 17:25:24,522 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:25:24,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:25:24,602 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:25:24,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:25:24,608 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:25:24,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:25:24 BoogieIcfgContainer [2022-12-13 17:25:24,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:25:24,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:25:24,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:25:24,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:25:24,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:25:24" (1/3) ... [2022-12-13 17:25:24,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c49307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:25:24, skipping insertion in model container [2022-12-13 17:25:24,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:25:24" (2/3) ... [2022-12-13 17:25:24,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c49307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:25:24, skipping insertion in model container [2022-12-13 17:25:24,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:25:24" (3/3) ... [2022-12-13 17:25:24,620 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2022-12-13 17:25:24,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:25:24,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:25:24,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:25:24,695 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@474b7c11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:25:24,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:25:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:25:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 17:25:24,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:24,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:24,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2022-12-13 17:25:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:24,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447951117] [2022-12-13 17:25:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:24,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:25:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:24,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447951117] [2022-12-13 17:25:24,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447951117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:25:24,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:25:24,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:25:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938920920] [2022-12-13 17:25:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:25:24,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:25:24,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:25:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:25:24,958 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:25:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:25,014 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-12-13 17:25:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:25:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-13 17:25:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:25,025 INFO L225 Difference]: With dead ends: 30 [2022-12-13 17:25:25,025 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 17:25:25,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:25:25,031 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:25,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:25:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 17:25:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 17:25:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 17:25:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-13 17:25:25,066 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2022-12-13 17:25:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:25,066 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 17:25:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:25:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-13 17:25:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:25:25,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:25,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:25,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:25:25,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2022-12-13 17:25:25,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686600912] [2022-12-13 17:25:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:25:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:25,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686600912] [2022-12-13 17:25:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686600912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:25:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:25:25,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:25:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863245754] [2022-12-13 17:25:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:25:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:25:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:25:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:25:25,140 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:25:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:25,177 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-12-13 17:25:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:25:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 17:25:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:25,179 INFO L225 Difference]: With dead ends: 24 [2022-12-13 17:25:25,179 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 17:25:25,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:25:25,182 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:25:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 17:25:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-13 17:25:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 17:25:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-13 17:25:25,190 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-12-13 17:25:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:25,190 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 17:25:25,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:25:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-13 17:25:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 17:25:25,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:25,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:25:25,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2022-12-13 17:25:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:25,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975732378] [2022-12-13 17:25:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:25:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:25:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975732378] [2022-12-13 17:25:25,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975732378] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836489565] [2022-12-13 17:25:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:25,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:25,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:25,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:25:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:25:25,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:25:25,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:25:25,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836489565] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:25,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:25,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2022-12-13 17:25:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478926707] [2022-12-13 17:25:25,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:25,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:25:25,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:25:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:25:25,600 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 17:25:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:25,677 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-12-13 17:25:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:25:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-12-13 17:25:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:25,679 INFO L225 Difference]: With dead ends: 35 [2022-12-13 17:25:25,679 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 17:25:25,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:25:25,680 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:25,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 59 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:25:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 17:25:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 17:25:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 17:25:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-12-13 17:25:25,686 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2022-12-13 17:25:25,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:25,686 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-12-13 17:25:25,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 17:25:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-12-13 17:25:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 17:25:25,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:25,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:25,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:25:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:25,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2022-12-13 17:25:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543957613] [2022-12-13 17:25:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:25:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:26,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543957613] [2022-12-13 17:25:26,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543957613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:26,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593377224] [2022-12-13 17:25:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:26,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:26,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:26,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:25:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:25:26,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:25:26,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:25:26,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593377224] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:26,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:26,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2022-12-13 17:25:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571424180] [2022-12-13 17:25:26,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:25:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:25:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:25:26,322 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 17:25:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:26,377 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-12-13 17:25:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:25:26,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-12-13 17:25:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:26,379 INFO L225 Difference]: With dead ends: 38 [2022-12-13 17:25:26,380 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 17:25:26,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:25:26,381 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:26,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:25:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 17:25:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-13 17:25:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-12-13 17:25:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2022-12-13 17:25:26,387 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2022-12-13 17:25:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:26,387 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2022-12-13 17:25:26,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 17:25:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2022-12-13 17:25:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 17:25:26,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:26,388 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:26,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:25:26,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:26,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2022-12-13 17:25:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:26,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609319299] [2022-12-13 17:25:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:26,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:25:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609319299] [2022-12-13 17:25:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609319299] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406675995] [2022-12-13 17:25:26,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:25:26,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:26,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:26,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:26,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:25:26,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:25:26,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:26,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:25:26,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 17:25:26,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 17:25:27,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406675995] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:27,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:27,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2022-12-13 17:25:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894722170] [2022-12-13 17:25:27,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:27,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:25:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:25:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:25:27,163 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-12-13 17:25:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:27,295 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2022-12-13 17:25:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:25:27,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2022-12-13 17:25:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:27,297 INFO L225 Difference]: With dead ends: 69 [2022-12-13 17:25:27,297 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 17:25:27,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:25:27,299 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:27,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 94 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:25:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 17:25:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 17:25:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-13 17:25:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-12-13 17:25:27,304 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2022-12-13 17:25:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:27,304 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-12-13 17:25:27,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-12-13 17:25:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-12-13 17:25:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 17:25:27,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:27,305 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:27,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:25:27,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:27,507 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2022-12-13 17:25:27,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11406765] [2022-12-13 17:25:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:27,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-12-13 17:25:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:27,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11406765] [2022-12-13 17:25:27,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11406765] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:27,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667631313] [2022-12-13 17:25:27,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:25:27,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:27,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:27,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:27,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:25:27,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 17:25:27,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:27,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:25:27,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-12-13 17:25:27,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-12-13 17:25:28,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667631313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:28,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:28,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 19 [2022-12-13 17:25:28,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150089284] [2022-12-13 17:25:28,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:25:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:25:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:25:28,289 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-13 17:25:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:28,492 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2022-12-13 17:25:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:25:28,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) Word has length 93 [2022-12-13 17:25:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:28,494 INFO L225 Difference]: With dead ends: 89 [2022-12-13 17:25:28,494 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 17:25:28,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 199 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2022-12-13 17:25:28,496 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:28,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 108 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:25:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 17:25:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-12-13 17:25:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-13 17:25:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2022-12-13 17:25:28,506 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 93 [2022-12-13 17:25:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:28,506 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2022-12-13 17:25:28,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-13 17:25:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2022-12-13 17:25:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 17:25:28,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:28,510 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:28,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:25:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:25:28,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1447005449, now seen corresponding path program 4 times [2022-12-13 17:25:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298891230] [2022-12-13 17:25:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 198 proven. 308 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-12-13 17:25:29,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:29,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298891230] [2022-12-13 17:25:29,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298891230] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:29,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753108409] [2022-12-13 17:25:29,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:25:29,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:29,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:29,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:29,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:25:29,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:25:29,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:29,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 17:25:29,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-13 17:25:29,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 352 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2022-12-13 17:25:29,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753108409] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:29,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:29,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 13] total 27 [2022-12-13 17:25:29,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516072340] [2022-12-13 17:25:29,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:25:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:25:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:25:29,972 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) [2022-12-13 17:25:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:30,195 INFO L93 Difference]: Finished difference Result 116 states and 179 transitions. [2022-12-13 17:25:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 17:25:30,195 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) Word has length 133 [2022-12-13 17:25:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:30,197 INFO L225 Difference]: With dead ends: 116 [2022-12-13 17:25:30,197 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 17:25:30,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 291 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 17:25:30,199 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 100 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:30,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 129 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:25:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 17:25:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2022-12-13 17:25:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 46 states have internal predecessors, (53), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (25), 11 states have call predecessors, (25), 11 states have call successors, (25) [2022-12-13 17:25:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2022-12-13 17:25:30,210 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 133 [2022-12-13 17:25:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:30,210 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2022-12-13 17:25:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) [2022-12-13 17:25:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2022-12-13 17:25:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 17:25:30,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:30,213 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:30,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:25:30,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:25:30,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1694816164, now seen corresponding path program 5 times [2022-12-13 17:25:30,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:30,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021197837] [2022-12-13 17:25:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 17:25:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2022-12-13 17:25:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021197837] [2022-12-13 17:25:30,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021197837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792947398] [2022-12-13 17:25:30,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:25:30,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:30,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:30,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:25:31,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-12-13 17:25:31,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:31,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:25:31,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 328 proven. 115 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2022-12-13 17:25:31,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 330 proven. 130 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2022-12-13 17:25:31,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792947398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:31,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:31,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 11] total 20 [2022-12-13 17:25:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280853234] [2022-12-13 17:25:31,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:31,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 17:25:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:25:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:25:31,581 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) [2022-12-13 17:25:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:31,703 INFO L93 Difference]: Finished difference Result 183 states and 270 transitions. [2022-12-13 17:25:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:25:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) Word has length 174 [2022-12-13 17:25:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:31,707 INFO L225 Difference]: With dead ends: 183 [2022-12-13 17:25:31,707 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 17:25:31,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 387 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-12-13 17:25:31,708 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 84 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:31,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 80 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:25:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 17:25:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2022-12-13 17:25:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 110 states have internal predecessors, (128), 33 states have call successors, (33), 19 states have call predecessors, (33), 18 states have return successors, (86), 37 states have call predecessors, (86), 33 states have call successors, (86) [2022-12-13 17:25:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 247 transitions. [2022-12-13 17:25:31,730 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 247 transitions. Word has length 174 [2022-12-13 17:25:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:31,730 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 247 transitions. [2022-12-13 17:25:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 13 states have call successors, (17), 1 states have call predecessors, (17), 7 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) [2022-12-13 17:25:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 247 transitions. [2022-12-13 17:25:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-13 17:25:31,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:31,735 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:31,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:25:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:31,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:31,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1099173212, now seen corresponding path program 6 times [2022-12-13 17:25:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:31,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375120920] [2022-12-13 17:25:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 17:25:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 17:25:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-12-13 17:25:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:34,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375120920] [2022-12-13 17:25:34,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375120920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:34,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984569822] [2022-12-13 17:25:34,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:25:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:34,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:34,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:34,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:25:34,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2022-12-13 17:25:34,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:34,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 167 conjunts are in the unsatisfiable core [2022-12-13 17:25:34,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-12-13 17:25:35,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-12-13 17:25:37,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984569822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:37,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:37,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2022-12-13 17:25:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730689735] [2022-12-13 17:25:37,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:37,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 17:25:37,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 17:25:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:25:37,286 INFO L87 Difference]: Start difference. First operand 167 states and 247 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 17:25:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:37,616 INFO L93 Difference]: Finished difference Result 290 states and 496 transitions. [2022-12-13 17:25:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:25:37,617 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) Word has length 283 [2022-12-13 17:25:37,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:37,620 INFO L225 Difference]: With dead ends: 290 [2022-12-13 17:25:37,620 INFO L226 Difference]: Without dead ends: 286 [2022-12-13 17:25:37,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 661 SyntacticMatches, 44 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:25:37,621 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 717 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:25:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-12-13 17:25:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 182. [2022-12-13 17:25:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 119 states have internal predecessors, (137), 36 states have call successors, (36), 19 states have call predecessors, (36), 21 states have return successors, (112), 43 states have call predecessors, (112), 36 states have call successors, (112) [2022-12-13 17:25:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 285 transitions. [2022-12-13 17:25:37,644 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 285 transitions. Word has length 283 [2022-12-13 17:25:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:37,644 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 285 transitions. [2022-12-13 17:25:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 17:25:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 285 transitions. [2022-12-13 17:25:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-13 17:25:37,647 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:25:37,648 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 36, 22, 22, 22, 22, 22, 22, 22, 14, 9, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:37,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:25:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:37,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:25:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 613156684, now seen corresponding path program 7 times [2022-12-13 17:25:37,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:37,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418707495] [2022-12-13 17:25:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:25:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:25:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:25:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 17:25:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:25:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:25:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:25:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:25:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:25:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 455 proven. 901 refuted. 0 times theorem prover too weak. 4158 trivial. 0 not checked. [2022-12-13 17:25:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:38,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418707495] [2022-12-13 17:25:38,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418707495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:38,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824700967] [2022-12-13 17:25:38,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 17:25:38,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:38,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:38,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:25:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:38,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:25:38,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 355 proven. 1303 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2022-12-13 17:25:38,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 355 proven. 1373 refuted. 0 times theorem prover too weak. 3786 trivial. 0 not checked. [2022-12-13 17:25:40,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824700967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:40,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:40,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 27 [2022-12-13 17:25:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798932388] [2022-12-13 17:25:40,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:40,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:25:40,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:25:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:25:40,399 INFO L87 Difference]: Start difference. First operand 182 states and 285 transitions. Second operand has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (35), 14 states have call predecessors, (35), 22 states have call successors, (35) [2022-12-13 17:25:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:25:40,717 INFO L93 Difference]: Finished difference Result 447 states and 883 transitions. [2022-12-13 17:25:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:25:40,718 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (35), 14 states have call predecessors, (35), 22 states have call successors, (35) Word has length 310 [2022-12-13 17:25:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:25:40,718 INFO L225 Difference]: With dead ends: 447 [2022-12-13 17:25:40,718 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 17:25:40,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 689 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 17:25:40,720 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 51 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:25:40,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 163 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:25:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 17:25:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 17:25:40,721 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) [2022-12-13 17:25:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 17:25:40,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2022-12-13 17:25:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:25:40,721 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:25:40,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (35), 14 states have call predecessors, (35), 22 states have call successors, (35) [2022-12-13 17:25:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 17:25:40,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 17:25:40,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 17:25:40,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:25:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:25:40,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 17:25:41,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 17:25:41,461 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 17:25:41,461 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-13 17:25:41,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 17:25:41,461 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= 7 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 7)) [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 25 32) the Hoare annotation is: (<= 7 |ULTIMATE.start_main_~x~0#1|) [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-12-13 17:25:41,462 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (not (<= fibo_~n 1)) (= fibo_~n |fibo_#in~n|)) [2022-12-13 17:25:41,463 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-13 17:25:41,463 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse1 (<= |fibo_#t~ret4| 1)) (.cse2 (<= 1 |fibo_#t~ret4|)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= 3 |fibo_#in~n|) .cse1 .cse2 (<= fibo_~n 3)) (and (<= 4 fibo_~n) .cse0 (<= |fibo_#t~ret4| 2) (<= fibo_~n 4) (<= 2 |fibo_#t~ret4|)) (and (<= |fibo_#t~ret4| 5) .cse0 (<= 5 |fibo_#t~ret4|) (<= fibo_~n 6) (<= 6 |fibo_#in~n|)) (and (not (<= fibo_~n 1)) .cse0 .cse1 .cse2 (<= fibo_~n 2)) (and .cse0 (<= 3 |fibo_#t~ret4|) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret4| 3) (<= fibo_~n 5)) (and .cse0 (<= 8 |fibo_#in~n|)) (and (<= 7 |fibo_#in~n|) (<= |fibo_#t~ret4| 8) .cse0 (<= 8 |fibo_#t~ret4|)))) [2022-12-13 17:25:41,463 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-12-13 17:25:41,463 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-12-13 17:25:41,463 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 15) the Hoare annotation is: true [2022-12-13 17:25:41,463 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-12-13 17:25:41,466 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2022-12-13 17:25:41,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:25:41,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:25:41 BoogieIcfgContainer [2022-12-13 17:25:41,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:25:41,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:25:41,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:25:41,477 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:25:41,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:25:24" (3/4) ... [2022-12-13 17:25:41,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:25:41,484 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-12-13 17:25:41,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-13 17:25:41,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 17:25:41,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 17:25:41,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 17:25:41,505 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:25:41,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:25:41,506 INFO L158 Benchmark]: Toolchain (without parser) took 17297.94ms. Allocated memory was 113.2MB in the beginning and 314.6MB in the end (delta: 201.3MB). Free memory was 76.7MB in the beginning and 135.2MB in the end (delta: -58.5MB). Peak memory consumption was 145.7MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,506 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:25:41,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.57ms. Allocated memory is still 113.2MB. Free memory was 76.7MB in the beginning and 66.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.76ms. Allocated memory is still 113.2MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,506 INFO L158 Benchmark]: Boogie Preprocessor took 12.84ms. Allocated memory is still 113.2MB. Free memory was 65.5MB in the beginning and 64.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:25:41,507 INFO L158 Benchmark]: RCFGBuilder took 206.03ms. Allocated memory is still 113.2MB. Free memory was 64.5MB in the beginning and 55.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,507 INFO L158 Benchmark]: TraceAbstraction took 16863.35ms. Allocated memory was 113.2MB in the beginning and 314.6MB in the end (delta: 201.3MB). Free memory was 54.7MB in the beginning and 138.3MB in the end (delta: -83.6MB). Peak memory consumption was 118.4MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,507 INFO L158 Benchmark]: Witness Printer took 28.69ms. Allocated memory is still 314.6MB. Free memory was 138.3MB in the beginning and 135.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:25:41,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.57ms. Allocated memory is still 113.2MB. Free memory was 76.7MB in the beginning and 66.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.76ms. Allocated memory is still 113.2MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.84ms. Allocated memory is still 113.2MB. Free memory was 65.5MB in the beginning and 64.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.03ms. Allocated memory is still 113.2MB. Free memory was 64.5MB in the beginning and 55.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16863.35ms. Allocated memory was 113.2MB in the beginning and 314.6MB in the end (delta: 201.3MB). Free memory was 54.7MB in the beginning and 138.3MB in the end (delta: -83.6MB). Peak memory consumption was 118.4MB. Max. memory is 16.1GB. * Witness Printer took 28.69ms. Allocated memory is still 314.6MB. Free memory was 138.3MB in the beginning and 135.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.8s, OverallIterations: 10, TraceHistogramMax: 45, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 386 mSDsluCounter, 1466 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1238 mSDsCounter, 556 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2359 IncrementalHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 556 mSolverCounterUnsat, 228 mSDtfsCounter, 2359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2673 GetRequests, 2403 SyntacticMatches, 74 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=9, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 127 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 314 PreInvPairs, 508 NumberOfFragments, 121 HoareAnnotationTreeSize, 314 FomulaSimplifications, 4631 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4306 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 2175 NumberOfCodeBlocks, 2120 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 3226 ConstructedInterpolants, 0 QuantifiedInterpolants, 7755 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2415 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 29370/39504 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: 25]: Loop Invariant Derived loop invariant: 7 <= x RESULT: Ultimate proved your program to be correct! [2022-12-13 17:25:41,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa793435-3386-452f-a4b5-bf55bc36911b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE