./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/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_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/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_89515ad3-e29f-4a9e-b4d1-4405677dc751/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 ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 --- 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 12:50:56,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:50:56,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:50:56,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:50:56,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:50:56,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:50:56,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:50:56,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:50:56,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:50:56,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:50:56,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:50:56,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:50:56,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:50:56,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:50:56,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:50:56,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:50:56,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:50:56,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:50:56,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:50:56,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:50:56,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:50:56,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:50:56,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:50:56,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:50:56,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:50:56,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:50:56,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:50:56,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:50:56,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:50:56,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:50:56,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:50:56,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:50:56,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:50:56,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:50:56,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:50:56,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:50:56,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:50:56,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:50:56,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:50:56,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:50:56,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:50:56,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:50:56,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:50:56,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:50:56,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:50:56,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:50:56,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:50:56,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:50:56,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:50:56,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:50:56,310 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:50:56,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:50:56,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:50:56,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:50:56,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:50:56,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:50:56,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:50:56,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:50:56,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:50:56,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:50:56,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:50:56,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:50:56,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:50:56,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:50:56,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:50:56,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:50:56,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:50:56,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:50:56,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:50:56,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:50:56,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:50:56,315 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:50:56,315 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_89515ad3-e29f-4a9e-b4d1-4405677dc751/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 [2022-12-13 12:50:56,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:50:56,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:50:56,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:50:56,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:50:56,507 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:50:56,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-12-13 12:50:59,018 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:50:59,235 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:50:59,236 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-12-13 12:50:59,250 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/data/1a6d72cdd/7909a44407394f54ac3297433775bf53/FLAG959adc203 [2022-12-13 12:50:59,259 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/data/1a6d72cdd/7909a44407394f54ac3297433775bf53 [2022-12-13 12:50:59,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:50:59,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:50:59,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:50:59,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:50:59,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:50:59,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddcfa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59, skipping insertion in model container [2022-12-13 12:50:59,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:50:59,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:50:59,483 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,488 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,563 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,565 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,574 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,578 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,579 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_89515ad3-e29f-4a9e-b4d1-4405677dc751/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-12-13 12:50:59,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:50:59,713 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:50:59,725 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,726 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,746 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,747 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,750 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,751 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:50:59,752 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_89515ad3-e29f-4a9e-b4d1-4405677dc751/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-12-13 12:50:59,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:50:59,824 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:50:59,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59 WrapperNode [2022-12-13 12:50:59,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:50:59,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:50:59,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:50:59,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:50:59,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,872 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 523 [2022-12-13 12:50:59,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:50:59,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:50:59,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:50:59,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:50:59,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:50:59,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:50:59,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:50:59,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:50:59,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (1/1) ... [2022-12-13 12:50:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:50:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:50:59,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:50:59,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:50:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 12:50:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 12:50:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 12:50:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 12:50:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 12:50:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 12:50:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 12:50:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 12:50:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 12:50:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 12:50:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 12:50:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 12:50:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 12:50:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:50:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:50:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:51:00,080 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:51:00,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:51:00,379 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:51:00,385 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:51:00,385 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:51:00,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:51:00 BoogieIcfgContainer [2022-12-13 12:51:00,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:51:00,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:51:00,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:51:00,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:51:00,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:50:59" (1/3) ... [2022-12-13 12:51:00,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d9f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:51:00, skipping insertion in model container [2022-12-13 12:51:00,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:50:59" (2/3) ... [2022-12-13 12:51:00,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157d9f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:51:00, skipping insertion in model container [2022-12-13 12:51:00,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:51:00" (3/3) ... [2022-12-13 12:51:00,392 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2022-12-13 12:51:00,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:51:00,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:51:00,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:51:00,446 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;@20934037, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:51:00,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:51:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 12:51:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 12:51:00,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:00,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:00,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1671433298, now seen corresponding path program 1 times [2022-12-13 12:51:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3954541] [2022-12-13 12:51:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:51:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 12:51:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:51:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:51:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:51:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:51:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:51:00,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:00,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3954541] [2022-12-13 12:51:00,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3954541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:51:00,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012127983] [2022-12-13 12:51:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:00,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:00,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:51:00,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:51:00,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:51:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 12:51:01,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 12:51:01,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:01,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012127983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:01,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:51:01,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-12-13 12:51:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45685521] [2022-12-13 12:51:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:51:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:51:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:01,090 INFO L87 Difference]: Start difference. First operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:01,123 INFO L93 Difference]: Finished difference Result 204 states and 279 transitions. [2022-12-13 12:51:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:51:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-12-13 12:51:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:01,131 INFO L225 Difference]: With dead ends: 204 [2022-12-13 12:51:01,131 INFO L226 Difference]: Without dead ends: 120 [2022-12-13 12:51:01,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:01,136 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:01,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:51:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-13 12:51:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-12-13 12:51:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 99 states have internal predecessors, (143), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 12:51:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2022-12-13 12:51:01,169 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 69 [2022-12-13 12:51:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:01,170 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2022-12-13 12:51:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2022-12-13 12:51:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 12:51:01,173 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:01,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:01,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:51:01,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 12:51:01,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1025509166, now seen corresponding path program 1 times [2022-12-13 12:51:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:01,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719909457] [2022-12-13 12:51:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:51:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:51:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 12:51:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:51:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:51:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:51:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:51:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:01,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719909457] [2022-12-13 12:51:01,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719909457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:51:01,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354664485] [2022-12-13 12:51:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:01,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:51:01,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:51:01,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:51:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:01,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:51:01,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 12:51:01,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:01,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354664485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:01,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:51:01,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-12-13 12:51:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771149697] [2022-12-13 12:51:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:51:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:51:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:51:01,821 INFO L87 Difference]: Start difference. First operand 120 states and 168 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:01,839 INFO L93 Difference]: Finished difference Result 194 states and 260 transitions. [2022-12-13 12:51:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:51:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-12-13 12:51:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:01,840 INFO L225 Difference]: With dead ends: 194 [2022-12-13 12:51:01,841 INFO L226 Difference]: Without dead ends: 123 [2022-12-13 12:51:01,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:51:01,842 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:01,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:51:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-13 12:51:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2022-12-13 12:51:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.45) internal successors, (145), 101 states have internal predecessors, (145), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 12:51:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-12-13 12:51:01,850 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 70 [2022-12-13 12:51:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:01,851 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-12-13 12:51:01,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-12-13 12:51:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 12:51:01,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:01,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:01,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:51:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:02,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1527449369, now seen corresponding path program 1 times [2022-12-13 12:51:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:02,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074180560] [2022-12-13 12:51:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:51:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 12:51:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:51:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:51:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 12:51:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:51:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:51:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074180560] [2022-12-13 12:51:02,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074180560] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:51:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488081525] [2022-12-13 12:51:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:02,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:02,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:51:02,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:51:02,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:51:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:51:02,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:51:02,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:02,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488081525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:02,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:51:02,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-12-13 12:51:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721777261] [2022-12-13 12:51:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:51:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:51:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:51:02,586 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:02,636 INFO L93 Difference]: Finished difference Result 237 states and 333 transitions. [2022-12-13 12:51:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:51:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-12-13 12:51:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:02,638 INFO L225 Difference]: With dead ends: 237 [2022-12-13 12:51:02,638 INFO L226 Difference]: Without dead ends: 124 [2022-12-13 12:51:02,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:51:02,640 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 73 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:02,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 559 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:51:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-13 12:51:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-13 12:51:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-13 12:51:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 173 transitions. [2022-12-13 12:51:02,650 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 173 transitions. Word has length 75 [2022-12-13 12:51:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:02,650 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 173 transitions. [2022-12-13 12:51:02,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2022-12-13 12:51:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 12:51:02,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:02,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:02,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:51:02,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:02,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1719790030, now seen corresponding path program 1 times [2022-12-13 12:51:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:02,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688689616] [2022-12-13 12:51:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:51:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:51:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:51:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:51:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:51:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:51:03,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:03,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688689616] [2022-12-13 12:51:03,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688689616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:03,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:03,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:51:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595918847] [2022-12-13 12:51:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:03,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:51:03,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:51:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:03,039 INFO L87 Difference]: Start difference. First operand 124 states and 173 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:03,536 INFO L93 Difference]: Finished difference Result 291 states and 410 transitions. [2022-12-13 12:51:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:51:03,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-12-13 12:51:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:03,538 INFO L225 Difference]: With dead ends: 291 [2022-12-13 12:51:03,538 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 12:51:03,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:51:03,539 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 289 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:03,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 451 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:51:03,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 12:51:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 124. [2022-12-13 12:51:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-13 12:51:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2022-12-13 12:51:03,555 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 76 [2022-12-13 12:51:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:03,555 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2022-12-13 12:51:03,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2022-12-13 12:51:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 12:51:03,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:03,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:03,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:51:03,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -88603257, now seen corresponding path program 2 times [2022-12-13 12:51:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:03,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651887616] [2022-12-13 12:51:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:51:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:51:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:51:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:51:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:51:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:51:03,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:03,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651887616] [2022-12-13 12:51:03,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651887616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:03,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:03,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:51:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091722347] [2022-12-13 12:51:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:51:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:03,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:51:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:03,674 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:04,164 INFO L93 Difference]: Finished difference Result 293 states and 413 transitions. [2022-12-13 12:51:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:51:04,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-12-13 12:51:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:04,166 INFO L225 Difference]: With dead ends: 293 [2022-12-13 12:51:04,167 INFO L226 Difference]: Without dead ends: 188 [2022-12-13 12:51:04,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:51:04,168 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 283 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:04,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 453 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:51:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-13 12:51:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 126. [2022-12-13 12:51:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 105 states have internal predecessors, (147), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 175 transitions. [2022-12-13 12:51:04,190 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 175 transitions. Word has length 77 [2022-12-13 12:51:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:04,190 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 175 transitions. [2022-12-13 12:51:04,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 175 transitions. [2022-12-13 12:51:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 12:51:04,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:04,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:04,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:51:04,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1889424617, now seen corresponding path program 1 times [2022-12-13 12:51:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:04,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101397533] [2022-12-13 12:51:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 12:51:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:51:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 12:51:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:51:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:51:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101397533] [2022-12-13 12:51:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101397533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:51:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638146445] [2022-12-13 12:51:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:04,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:51:04,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:51:04,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:51:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:04,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:51:04,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:04,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:51:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:04,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638146445] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:51:04,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:51:04,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-12-13 12:51:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072534308] [2022-12-13 12:51:04,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:51:04,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:51:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:51:04,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:04,527 INFO L87 Difference]: Start difference. First operand 126 states and 175 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 12:51:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:05,015 INFO L93 Difference]: Finished difference Result 373 states and 556 transitions. [2022-12-13 12:51:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:51:05,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-12-13 12:51:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:05,017 INFO L225 Difference]: With dead ends: 373 [2022-12-13 12:51:05,017 INFO L226 Difference]: Without dead ends: 302 [2022-12-13 12:51:05,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:51:05,018 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 554 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:05,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 623 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:51:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-12-13 12:51:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2022-12-13 12:51:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 192 states have (on average 1.625) internal successors, (312), 195 states have internal predecessors, (312), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 340 transitions. [2022-12-13 12:51:05,041 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 340 transitions. Word has length 78 [2022-12-13 12:51:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:05,041 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 340 transitions. [2022-12-13 12:51:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 12:51:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 340 transitions. [2022-12-13 12:51:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 12:51:05,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:05,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:05,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:51:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 12:51:05,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash -396408711, now seen corresponding path program 1 times [2022-12-13 12:51:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:05,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832679805] [2022-12-13 12:51:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:51:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:51:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:51:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:51:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:05,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:05,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832679805] [2022-12-13 12:51:05,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832679805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:05,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:05,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933204394] [2022-12-13 12:51:05,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:05,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:05,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:05,314 INFO L87 Difference]: Start difference. First operand 216 states and 340 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:05,699 INFO L93 Difference]: Finished difference Result 563 states and 907 transitions. [2022-12-13 12:51:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-12-13 12:51:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:05,703 INFO L225 Difference]: With dead ends: 563 [2022-12-13 12:51:05,703 INFO L226 Difference]: Without dead ends: 375 [2022-12-13 12:51:05,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:05,704 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 270 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:05,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 375 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-12-13 12:51:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 305. [2022-12-13 12:51:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 281 states have (on average 1.6725978647686832) internal successors, (470), 284 states have internal predecessors, (470), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 498 transitions. [2022-12-13 12:51:05,739 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 498 transitions. Word has length 85 [2022-12-13 12:51:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:05,740 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 498 transitions. [2022-12-13 12:51:05,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 498 transitions. [2022-12-13 12:51:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 12:51:05,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:05,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:51:05,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1723354495, now seen corresponding path program 1 times [2022-12-13 12:51:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:05,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368233747] [2022-12-13 12:51:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:51:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:51:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:51:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:51:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:51:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:05,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368233747] [2022-12-13 12:51:05,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368233747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:05,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:05,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090751882] [2022-12-13 12:51:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:05,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:05,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:05,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:05,824 INFO L87 Difference]: Start difference. First operand 305 states and 498 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:06,173 INFO L93 Difference]: Finished difference Result 756 states and 1257 transitions. [2022-12-13 12:51:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-12-13 12:51:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:06,176 INFO L225 Difference]: With dead ends: 756 [2022-12-13 12:51:06,176 INFO L226 Difference]: Without dead ends: 497 [2022-12-13 12:51:06,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:06,178 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 268 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 364 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-12-13 12:51:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 427. [2022-12-13 12:51:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 403 states have (on average 1.7047146401985112) internal successors, (687), 406 states have internal predecessors, (687), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 715 transitions. [2022-12-13 12:51:06,213 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 715 transitions. Word has length 86 [2022-12-13 12:51:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:06,214 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 715 transitions. [2022-12-13 12:51:06,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 715 transitions. [2022-12-13 12:51:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 12:51:06,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:06,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:06,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:51:06,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 221443351, now seen corresponding path program 1 times [2022-12-13 12:51:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:06,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893194613] [2022-12-13 12:51:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:51:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:51:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:51:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:51:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 12:51:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893194613] [2022-12-13 12:51:06,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893194613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:06,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:06,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351546033] [2022-12-13 12:51:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:06,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:06,294 INFO L87 Difference]: Start difference. First operand 427 states and 715 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:06,691 INFO L93 Difference]: Finished difference Result 1078 states and 1828 transitions. [2022-12-13 12:51:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:06,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-12-13 12:51:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:06,696 INFO L225 Difference]: With dead ends: 1078 [2022-12-13 12:51:06,696 INFO L226 Difference]: Without dead ends: 716 [2022-12-13 12:51:06,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:06,697 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 267 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:06,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 371 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-12-13 12:51:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 646. [2022-12-13 12:51:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 622 states have (on average 1.712218649517685) internal successors, (1065), 625 states have internal predecessors, (1065), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1093 transitions. [2022-12-13 12:51:06,730 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1093 transitions. Word has length 87 [2022-12-13 12:51:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:06,731 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1093 transitions. [2022-12-13 12:51:06,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1093 transitions. [2022-12-13 12:51:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 12:51:06,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:06,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:51:06,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1679828301, now seen corresponding path program 1 times [2022-12-13 12:51:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:06,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019034150] [2022-12-13 12:51:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 12:51:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:51:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:51:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:51:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:51:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:06,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019034150] [2022-12-13 12:51:06,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019034150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:06,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:06,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377071938] [2022-12-13 12:51:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:06,798 INFO L87 Difference]: Start difference. First operand 646 states and 1093 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:07,153 INFO L93 Difference]: Finished difference Result 1600 states and 2738 transitions. [2022-12-13 12:51:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-12-13 12:51:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:07,156 INFO L225 Difference]: With dead ends: 1600 [2022-12-13 12:51:07,156 INFO L226 Difference]: Without dead ends: 1067 [2022-12-13 12:51:07,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:07,158 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 265 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:07,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 370 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-12-13 12:51:07,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 997. [2022-12-13 12:51:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 973 states have (on average 1.7081192189105858) internal successors, (1662), 976 states have internal predecessors, (1662), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1690 transitions. [2022-12-13 12:51:07,198 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1690 transitions. Word has length 88 [2022-12-13 12:51:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:07,198 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1690 transitions. [2022-12-13 12:51:07,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1690 transitions. [2022-12-13 12:51:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 12:51:07,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:07,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:51:07,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash -889624779, now seen corresponding path program 1 times [2022-12-13 12:51:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917530727] [2022-12-13 12:51:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:07,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 12:51:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 12:51:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:51:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:51:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:51:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:07,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:07,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917530727] [2022-12-13 12:51:07,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917530727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:07,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:07,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742618095] [2022-12-13 12:51:07,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:07,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:07,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:07,269 INFO L87 Difference]: Start difference. First operand 997 states and 1690 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:07,673 INFO L93 Difference]: Finished difference Result 2450 states and 4203 transitions. [2022-12-13 12:51:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-12-13 12:51:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:07,678 INFO L225 Difference]: With dead ends: 2450 [2022-12-13 12:51:07,679 INFO L226 Difference]: Without dead ends: 1646 [2022-12-13 12:51:07,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:07,680 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 263 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:07,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 370 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-12-13 12:51:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1576. [2022-12-13 12:51:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1552 states have (on average 1.6990979381443299) internal successors, (2637), 1555 states have internal predecessors, (2637), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2665 transitions. [2022-12-13 12:51:07,745 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2665 transitions. Word has length 89 [2022-12-13 12:51:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:07,745 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2665 transitions. [2022-12-13 12:51:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2665 transitions. [2022-12-13 12:51:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 12:51:07,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:07,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:07,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:51:07,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1310846161, now seen corresponding path program 1 times [2022-12-13 12:51:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:07,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062363821] [2022-12-13 12:51:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:51:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:51:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 12:51:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:51:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 12:51:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:07,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:07,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062363821] [2022-12-13 12:51:07,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062363821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:07,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:07,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:07,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614831741] [2022-12-13 12:51:07,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:07,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:07,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:07,812 INFO L87 Difference]: Start difference. First operand 1576 states and 2665 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:08,262 INFO L93 Difference]: Finished difference Result 3902 states and 6682 transitions. [2022-12-13 12:51:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:08,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-12-13 12:51:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:08,269 INFO L225 Difference]: With dead ends: 3902 [2022-12-13 12:51:08,270 INFO L226 Difference]: Without dead ends: 2639 [2022-12-13 12:51:08,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:08,271 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 261 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:08,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 370 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-12-13 12:51:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2569. [2022-12-13 12:51:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2545 states have (on average 1.6884086444007858) internal successors, (4297), 2548 states have internal predecessors, (4297), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 4325 transitions. [2022-12-13 12:51:08,382 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 4325 transitions. Word has length 90 [2022-12-13 12:51:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:08,382 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 4325 transitions. [2022-12-13 12:51:08,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 4325 transitions. [2022-12-13 12:51:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 12:51:08,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:08,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:08,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:51:08,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1626247507, now seen corresponding path program 1 times [2022-12-13 12:51:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476195500] [2022-12-13 12:51:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:51:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:51:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:51:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:51:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:08,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476195500] [2022-12-13 12:51:08,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476195500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:08,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:08,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553892893] [2022-12-13 12:51:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:08,452 INFO L87 Difference]: Start difference. First operand 2569 states and 4325 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:08,967 INFO L93 Difference]: Finished difference Result 6496 states and 11070 transitions. [2022-12-13 12:51:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-12-13 12:51:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:08,981 INFO L225 Difference]: With dead ends: 6496 [2022-12-13 12:51:08,981 INFO L226 Difference]: Without dead ends: 4408 [2022-12-13 12:51:08,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:08,985 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 260 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:08,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 368 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-12-13 12:51:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4338. [2022-12-13 12:51:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4314 states have (on average 1.67663421418637) internal successors, (7233), 4317 states have internal predecessors, (7233), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 7261 transitions. [2022-12-13 12:51:09,243 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 7261 transitions. Word has length 91 [2022-12-13 12:51:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:09,243 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 7261 transitions. [2022-12-13 12:51:09,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 7261 transitions. [2022-12-13 12:51:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 12:51:09,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:09,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:09,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:51:09,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1889425681, now seen corresponding path program 1 times [2022-12-13 12:51:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556225918] [2022-12-13 12:51:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:51:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 12:51:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:51:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:51:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:51:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:09,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556225918] [2022-12-13 12:51:09,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556225918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:09,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:09,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147741363] [2022-12-13 12:51:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:09,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:09,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:09,319 INFO L87 Difference]: Start difference. First operand 4338 states and 7261 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:09,858 INFO L93 Difference]: Finished difference Result 11292 states and 19098 transitions. [2022-12-13 12:51:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:09,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-12-13 12:51:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:09,873 INFO L225 Difference]: With dead ends: 11292 [2022-12-13 12:51:09,874 INFO L226 Difference]: Without dead ends: 7659 [2022-12-13 12:51:09,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:09,879 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 257 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:09,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 369 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:51:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-12-13 12:51:10,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-12-13 12:51:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6629213483146068) internal successors, (12580), 7568 states have internal predecessors, (12580), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12608 transitions. [2022-12-13 12:51:10,242 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12608 transitions. Word has length 92 [2022-12-13 12:51:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:10,242 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12608 transitions. [2022-12-13 12:51:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12608 transitions. [2022-12-13 12:51:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 12:51:10,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:10,262 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:51:10,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 54984254, now seen corresponding path program 2 times [2022-12-13 12:51:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193919445] [2022-12-13 12:51:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:51:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:51:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:51:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:51:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 12:51:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 12:51:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193919445] [2022-12-13 12:51:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193919445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:10,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:10,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003992071] [2022-12-13 12:51:10,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:10,333 INFO L87 Difference]: Start difference. First operand 7589 states and 12608 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:11,006 INFO L93 Difference]: Finished difference Result 14103 states and 23561 transitions. [2022-12-13 12:51:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-12-13 12:51:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:11,032 INFO L225 Difference]: With dead ends: 14103 [2022-12-13 12:51:11,033 INFO L226 Difference]: Without dead ends: 7659 [2022-12-13 12:51:11,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:11,039 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 270 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:11,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 603 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-12-13 12:51:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-12-13 12:51:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6448116325181759) internal successors, (12443), 7568 states have internal predecessors, (12443), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12471 transitions. [2022-12-13 12:51:11,380 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12471 transitions. Word has length 93 [2022-12-13 12:51:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:11,381 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12471 transitions. [2022-12-13 12:51:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12471 transitions. [2022-12-13 12:51:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 12:51:11,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:11,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:51:11,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2024778895, now seen corresponding path program 1 times [2022-12-13 12:51:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311873292] [2022-12-13 12:51:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:11,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:51:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:51:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:51:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:51:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 12:51:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311873292] [2022-12-13 12:51:11,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311873292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:11,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:11,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:11,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245280570] [2022-12-13 12:51:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:11,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:11,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:11,455 INFO L87 Difference]: Start difference. First operand 7589 states and 12471 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:12,202 INFO L93 Difference]: Finished difference Result 20366 states and 33702 transitions. [2022-12-13 12:51:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-12-13 12:51:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:12,233 INFO L225 Difference]: With dead ends: 20366 [2022-12-13 12:51:12,233 INFO L226 Difference]: Without dead ends: 13770 [2022-12-13 12:51:12,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:12,243 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 256 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:12,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 369 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:51:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13770 states. [2022-12-13 12:51:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13770 to 13700. [2022-12-13 12:51:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13700 states, 13676 states have (on average 1.626718338695525) internal successors, (22247), 13679 states have internal predecessors, (22247), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 22275 transitions. [2022-12-13 12:51:12,850 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 22275 transitions. Word has length 93 [2022-12-13 12:51:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:12,850 INFO L495 AbstractCegarLoop]: Abstraction has 13700 states and 22275 transitions. [2022-12-13 12:51:12,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 22275 transitions. [2022-12-13 12:51:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 12:51:12,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:12,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:51:12,863 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 522393331, now seen corresponding path program 1 times [2022-12-13 12:51:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:12,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408427006] [2022-12-13 12:51:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:12,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 12:51:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:51:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:51:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:51:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:51:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408427006] [2022-12-13 12:51:12,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408427006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:12,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:12,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681394877] [2022-12-13 12:51:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:12,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:12,939 INFO L87 Difference]: Start difference. First operand 13700 states and 22275 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:14,252 INFO L93 Difference]: Finished difference Result 37778 states and 61674 transitions. [2022-12-13 12:51:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-12-13 12:51:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:14,295 INFO L225 Difference]: With dead ends: 37778 [2022-12-13 12:51:14,295 INFO L226 Difference]: Without dead ends: 25431 [2022-12-13 12:51:14,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:14,304 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 252 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:14,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 372 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:51:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25431 states. [2022-12-13 12:51:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25431 to 25361. [2022-12-13 12:51:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25361 states, 25337 states have (on average 1.605083474760232) internal successors, (40668), 25340 states have internal predecessors, (40668), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25361 states to 25361 states and 40696 transitions. [2022-12-13 12:51:15,593 INFO L78 Accepts]: Start accepts. Automaton has 25361 states and 40696 transitions. Word has length 94 [2022-12-13 12:51:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:15,593 INFO L495 AbstractCegarLoop]: Abstraction has 25361 states and 40696 transitions. [2022-12-13 12:51:15,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25361 states and 40696 transitions. [2022-12-13 12:51:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 12:51:15,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:15,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:15,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:51:15,608 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1876725135, now seen corresponding path program 1 times [2022-12-13 12:51:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:15,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585586551] [2022-12-13 12:51:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:51:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:51:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:51:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:51:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 12:51:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:15,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:15,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585586551] [2022-12-13 12:51:15,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585586551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:15,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:15,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:51:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479223171] [2022-12-13 12:51:15,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:51:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:51:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:51:15,696 INFO L87 Difference]: Start difference. First operand 25361 states and 40696 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:17,837 INFO L93 Difference]: Finished difference Result 47931 states and 76785 transitions. [2022-12-13 12:51:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:51:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2022-12-13 12:51:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:17,915 INFO L225 Difference]: With dead ends: 47931 [2022-12-13 12:51:17,916 INFO L226 Difference]: Without dead ends: 47860 [2022-12-13 12:51:17,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:51:17,926 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 251 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 369 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:51:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47860 states. [2022-12-13 12:51:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47860 to 47790. [2022-12-13 12:51:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47790 states, 47766 states have (on average 1.580119750450111) internal successors, (75476), 47769 states have internal predecessors, (75476), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-12-13 12:51:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47790 states to 47790 states and 75504 transitions. [2022-12-13 12:51:20,357 INFO L78 Accepts]: Start accepts. Automaton has 47790 states and 75504 transitions. Word has length 95 [2022-12-13 12:51:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:20,357 INFO L495 AbstractCegarLoop]: Abstraction has 47790 states and 75504 transitions. [2022-12-13 12:51:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 47790 states and 75504 transitions. [2022-12-13 12:51:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 12:51:20,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:20,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:51:20,372 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash -206672683, now seen corresponding path program 1 times [2022-12-13 12:51:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:20,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317294162] [2022-12-13 12:51:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:51:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:51:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 12:51:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:51:20,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:20,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317294162] [2022-12-13 12:51:20,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317294162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:51:20,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628367032] [2022-12-13 12:51:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:20,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:51:20,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:51:20,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:51:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:20,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 12:51:20,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:51:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:51:21,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:51:21,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628367032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:21,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:51:21,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-12-13 12:51:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253337175] [2022-12-13 12:51:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:51:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:51:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-12-13 12:51:21,047 INFO L87 Difference]: Start difference. First operand 47790 states and 75504 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:51:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:23,869 INFO L93 Difference]: Finished difference Result 48000 states and 75766 transitions. [2022-12-13 12:51:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:51:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 96 [2022-12-13 12:51:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:23,959 INFO L225 Difference]: With dead ends: 48000 [2022-12-13 12:51:23,959 INFO L226 Difference]: Without dead ends: 47935 [2022-12-13 12:51:23,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 12:51:23,974 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 378 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:23,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1618 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:51:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47935 states. [2022-12-13 12:51:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47935 to 47884. [2022-12-13 12:51:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47884 states, 47840 states have (on average 1.5796822742474916) internal successors, (75572), 47844 states have internal predecessors, (75572), 23 states have call successors, (23), 15 states have call predecessors, (23), 20 states have return successors, (30), 24 states have call predecessors, (30), 21 states have call successors, (30) [2022-12-13 12:51:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47884 states to 47884 states and 75625 transitions. [2022-12-13 12:51:26,840 INFO L78 Accepts]: Start accepts. Automaton has 47884 states and 75625 transitions. Word has length 96 [2022-12-13 12:51:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:26,840 INFO L495 AbstractCegarLoop]: Abstraction has 47884 states and 75625 transitions. [2022-12-13 12:51:26,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:51:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 47884 states and 75625 transitions. [2022-12-13 12:51:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:51:26,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:26,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:26,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:51:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:51:27,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1817903000, now seen corresponding path program 1 times [2022-12-13 12:51:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:27,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423254122] [2022-12-13 12:51:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:51:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:51:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:51:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423254122] [2022-12-13 12:51:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423254122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:27,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:51:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542575232] [2022-12-13 12:51:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:51:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:51:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:27,205 INFO L87 Difference]: Start difference. First operand 47884 states and 75625 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:32,146 INFO L93 Difference]: Finished difference Result 94505 states and 149401 transitions. [2022-12-13 12:51:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:51:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-12-13 12:51:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:32,331 INFO L225 Difference]: With dead ends: 94505 [2022-12-13 12:51:32,331 INFO L226 Difference]: Without dead ends: 94355 [2022-12-13 12:51:32,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:51:32,350 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 547 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:32,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 521 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 12:51:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94355 states. [2022-12-13 12:51:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94355 to 94053. [2022-12-13 12:51:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94053 states, 93968 states have (on average 1.5819534309552188) internal successors, (148653), 93977 states have internal predecessors, (148653), 43 states have call successors, (43), 28 states have call predecessors, (43), 41 states have return successors, (62), 47 states have call predecessors, (62), 39 states have call successors, (62) [2022-12-13 12:51:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94053 states to 94053 states and 148758 transitions. [2022-12-13 12:51:36,869 INFO L78 Accepts]: Start accepts. Automaton has 94053 states and 148758 transitions. Word has length 97 [2022-12-13 12:51:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:36,869 INFO L495 AbstractCegarLoop]: Abstraction has 94053 states and 148758 transitions. [2022-12-13 12:51:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:51:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 94053 states and 148758 transitions. [2022-12-13 12:51:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:51:36,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:36,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:51:36,893 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash -834301338, now seen corresponding path program 1 times [2022-12-13 12:51:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:36,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310052925] [2022-12-13 12:51:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:51:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:51:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:51:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:37,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310052925] [2022-12-13 12:51:37,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310052925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:37,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:37,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 12:51:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480049265] [2022-12-13 12:51:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:51:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:51:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:51:37,086 INFO L87 Difference]: Start difference. First operand 94053 states and 148758 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:51:42,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:42,147 INFO L93 Difference]: Finished difference Result 94935 states and 149937 transitions. [2022-12-13 12:51:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 12:51:42,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 97 [2022-12-13 12:51:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:42,325 INFO L225 Difference]: With dead ends: 94935 [2022-12-13 12:51:42,325 INFO L226 Difference]: Without dead ends: 94419 [2022-12-13 12:51:42,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 12:51:42,353 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 425 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:42,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 915 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 12:51:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94419 states. [2022-12-13 12:51:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94419 to 94087. [2022-12-13 12:51:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94087 states, 93998 states have (on average 1.5818953594757335) internal successors, (148695), 94004 states have internal predecessors, (148695), 49 states have call successors, (49), 32 states have call predecessors, (49), 39 states have return successors, (60), 50 states have call predecessors, (60), 45 states have call successors, (60) [2022-12-13 12:51:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94087 states to 94087 states and 148804 transitions. [2022-12-13 12:51:46,811 INFO L78 Accepts]: Start accepts. Automaton has 94087 states and 148804 transitions. Word has length 97 [2022-12-13 12:51:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:46,811 INFO L495 AbstractCegarLoop]: Abstraction has 94087 states and 148804 transitions. [2022-12-13 12:51:46,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:51:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 94087 states and 148804 transitions. [2022-12-13 12:51:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:51:46,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:46,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:46,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:51:46,834 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1488412133, now seen corresponding path program 1 times [2022-12-13 12:51:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:46,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291526195] [2022-12-13 12:51:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:46,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:51:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:51:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:51:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291526195] [2022-12-13 12:51:46,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291526195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:46,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:46,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:51:46,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005212244] [2022-12-13 12:51:46,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:46,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:51:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:51:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:51:46,915 INFO L87 Difference]: Start difference. First operand 94087 states and 148804 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:51:51,563 INFO L93 Difference]: Finished difference Result 94369 states and 149168 transitions. [2022-12-13 12:51:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:51:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2022-12-13 12:51:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:51,741 INFO L225 Difference]: With dead ends: 94369 [2022-12-13 12:51:51,741 INFO L226 Difference]: Without dead ends: 94183 [2022-12-13 12:51:51,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:51:51,758 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 218 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:51,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 529 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:51:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94183 states. [2022-12-13 12:51:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94183 to 93992. [2022-12-13 12:51:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93992 states, 93925 states have (on average 1.582081447963801) internal successors, (148597), 93926 states have internal predecessors, (148597), 36 states have call successors, (36), 27 states have call predecessors, (36), 30 states have return successors, (41), 38 states have call predecessors, (41), 32 states have call successors, (41) [2022-12-13 12:51:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93992 states to 93992 states and 148674 transitions. [2022-12-13 12:51:55,987 INFO L78 Accepts]: Start accepts. Automaton has 93992 states and 148674 transitions. Word has length 97 [2022-12-13 12:51:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:51:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 93992 states and 148674 transitions. [2022-12-13 12:51:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 12:51:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 93992 states and 148674 transitions. [2022-12-13 12:51:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 12:51:56,012 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:51:56,012 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:51:56,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:51:56,012 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:51:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:51:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1209002800, now seen corresponding path program 1 times [2022-12-13 12:51:56,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:51:56,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817702461] [2022-12-13 12:51:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:51:56,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:51:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:51:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:51:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:51:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:51:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:51:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:51:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:51:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:51:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:51:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 12:51:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:51:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817702461] [2022-12-13 12:51:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817702461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:51:56,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:51:56,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 12:51:56,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610688851] [2022-12-13 12:51:56,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:51:56,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 12:51:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:51:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 12:51:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:51:56,235 INFO L87 Difference]: Start difference. First operand 93992 states and 148674 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:52:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:01,790 INFO L93 Difference]: Finished difference Result 94354 states and 149116 transitions. [2022-12-13 12:52:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 12:52:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 98 [2022-12-13 12:52:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:01,947 INFO L225 Difference]: With dead ends: 94354 [2022-12-13 12:52:01,947 INFO L226 Difference]: Without dead ends: 94111 [2022-12-13 12:52:01,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=2036, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 12:52:01,965 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 621 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:01,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 976 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 12:52:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94111 states. [2022-12-13 12:52:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94111 to 93925. [2022-12-13 12:52:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93925 states, 93871 states have (on average 1.5822351951081803) internal successors, (148526), 93873 states have internal predecessors, (148526), 29 states have call successors, (29), 22 states have call predecessors, (29), 24 states have return successors, (31), 29 states have call predecessors, (31), 26 states have call successors, (31) [2022-12-13 12:52:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93925 states to 93925 states and 148586 transitions. [2022-12-13 12:52:07,419 INFO L78 Accepts]: Start accepts. Automaton has 93925 states and 148586 transitions. Word has length 98 [2022-12-13 12:52:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:07,420 INFO L495 AbstractCegarLoop]: Abstraction has 93925 states and 148586 transitions. [2022-12-13 12:52:07,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 12:52:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 93925 states and 148586 transitions. [2022-12-13 12:52:07,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:52:07,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:07,452 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:52:07,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:52:07,452 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1199891933, now seen corresponding path program 1 times [2022-12-13 12:52:07,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:07,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776376897] [2022-12-13 12:52:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:52:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:52:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:52:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:52:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:52:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:52:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 12:52:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776376897] [2022-12-13 12:52:07,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776376897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414399133] [2022-12-13 12:52:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:07,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:07,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:07,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:52:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:07,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:52:07,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:52:07,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:07,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414399133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:07,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:07,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 12:52:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877653290] [2022-12-13 12:52:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:07,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:52:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:52:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:52:07,707 INFO L87 Difference]: Start difference. First operand 93925 states and 148586 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:52:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:12,323 INFO L93 Difference]: Finished difference Result 184740 states and 292847 transitions. [2022-12-13 12:52:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:52:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2022-12-13 12:52:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:12,491 INFO L225 Difference]: With dead ends: 184740 [2022-12-13 12:52:12,492 INFO L226 Difference]: Without dead ends: 93947 [2022-12-13 12:52:12,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:52:12,551 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 54 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:12,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 393 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93947 states. [2022-12-13 12:52:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93947 to 93925. [2022-12-13 12:52:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93925 states, 93871 states have (on average 1.5602688796326873) internal successors, (146464), 93873 states have internal predecessors, (146464), 29 states have call successors, (29), 22 states have call predecessors, (29), 24 states have return successors, (31), 29 states have call predecessors, (31), 26 states have call successors, (31) [2022-12-13 12:52:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93925 states to 93925 states and 146524 transitions. [2022-12-13 12:52:17,319 INFO L78 Accepts]: Start accepts. Automaton has 93925 states and 146524 transitions. Word has length 103 [2022-12-13 12:52:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:17,320 INFO L495 AbstractCegarLoop]: Abstraction has 93925 states and 146524 transitions. [2022-12-13 12:52:17,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:52:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 93925 states and 146524 transitions. [2022-12-13 12:52:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 12:52:17,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:17,353 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:52:17,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:52:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:52:17,555 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 791218598, now seen corresponding path program 1 times [2022-12-13 12:52:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:17,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061792689] [2022-12-13 12:52:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:52:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:52:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:52:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:52:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:52:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:52:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 12:52:17,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061792689] [2022-12-13 12:52:17,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061792689] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121796276] [2022-12-13 12:52:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:17,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:17,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:17,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:17,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:52:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:17,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:52:17,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 12:52:17,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:17,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121796276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:17,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:17,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 12:52:17,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68341313] [2022-12-13 12:52:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:17,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:52:17,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:52:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:52:17,835 INFO L87 Difference]: Start difference. First operand 93925 states and 146524 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-12-13 12:52:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:22,105 INFO L93 Difference]: Finished difference Result 93929 states and 146528 transitions. [2022-12-13 12:52:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:52:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 104 [2022-12-13 12:52:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:22,106 INFO L225 Difference]: With dead ends: 93929 [2022-12-13 12:52:22,106 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 12:52:22,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:52:22,152 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 9 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 656 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 12:52:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 12:52:22,153 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 12:52:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 12:52:22,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2022-12-13 12:52:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:22,153 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 12:52:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-12-13 12:52:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 12:52:22,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 12:52:22,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 12:52:22,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:52:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89515ad3-e29f-4a9e-b4d1-4405677dc751/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 12:52:22,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 12:53:36,342 WARN L233 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 82 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 12:54:43,385 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 90 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 12:55:50,361 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 97 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 12:58:04,399 WARN L233 SmtUtils]: Spent 2.23m on a formula simplification that was a NOOP. DAG size: 98 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 13:00:18,614 WARN L233 SmtUtils]: Spent 2.24m on a formula simplification that was a NOOP. DAG size: 101 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 13:01:27,481 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 94 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)