./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF --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 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:54:11,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:54:11,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:54:11,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:54:11,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:54:11,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:54:11,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:54:11,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:54:11,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:54:11,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:54:11,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:54:11,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:54:11,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:54:11,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:54:11,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:54:11,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:54:11,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:54:11,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:54:11,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:54:11,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:54:11,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:54:11,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:54:11,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:54:11,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:54:11,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:54:11,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:54:11,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:54:11,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:54:11,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:54:11,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:54:11,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:54:11,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:54:11,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:54:11,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:54:11,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:54:11,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:54:11,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:54:11,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:54:11,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:54:11,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:54:11,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:54:11,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:54:11,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:54:11,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:54:11,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:54:11,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:54:11,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:54:11,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:54:11,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:54:11,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:54:11,325 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:54:11,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:54:11,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:54:11,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:54:11,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:54:11,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:54:11,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:54:11,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:54:11,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:54:11,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:54:11,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:54:11,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:54:11,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:54:11,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:54:11,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:54:11,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:54:11,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:54:11,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:54:11,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:54:11,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:54:11,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:54:11,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:54:11,335 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:54:11,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:54:11,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:54:11,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:54:11,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 [2021-11-20 05:54:11,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:54:11,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:54:11,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:54:11,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:54:11,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:54:11,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-20 05:54:11,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/data/9d32c1515/3c896de392ad4ce2a4856ad8b44a211d/FLAG2995b0465 [2021-11-20 05:54:12,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:54:12,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2021-11-20 05:54:12,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/data/9d32c1515/3c896de392ad4ce2a4856ad8b44a211d/FLAG2995b0465 [2021-11-20 05:54:12,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/data/9d32c1515/3c896de392ad4ce2a4856ad8b44a211d [2021-11-20 05:54:12,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:54:12,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:54:12,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:54:12,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:54:12,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:54:12,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:54:12" (1/1) ... [2021-11-20 05:54:12,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4dfeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:12, skipping insertion in model container [2021-11-20 05:54:12,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:54:12" (1/1) ... [2021-11-20 05:54:12,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:54:12,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:54:13,433 WARN L230 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_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-20 05:54:13,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:54:13,615 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:54:13,750 WARN L230 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_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2021-11-20 05:54:13,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:54:13,836 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:54:13,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13 WrapperNode [2021-11-20 05:54:13,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:54:13,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:54:13,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:54:13,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:54:13,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:13,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:13,964 INFO L137 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 57, calls inlined = 48, statements flattened = 880 [2021-11-20 05:54:13,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:54:13,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:54:13,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:54:13,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:54:13,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:13,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:13,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:13,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:14,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:14,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:14,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:14,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:54:14,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:54:14,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:54:14,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:54:14,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (1/1) ... [2021-11-20 05:54:14,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:54:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:14,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:54:14,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:54:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 05:54:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 05:54:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 05:54:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 05:54:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 05:54:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 05:54:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 05:54:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 05:54:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 05:54:14,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 05:54:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 05:54:14,184 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 05:54:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 05:54:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 05:54:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 05:54:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 05:54:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 05:54:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:54:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 05:54:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 05:54:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 05:54:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 05:54:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 05:54:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 05:54:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-20 05:54:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-20 05:54:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 05:54:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 05:54:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 05:54:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 05:54:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 05:54:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 05:54:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 05:54:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 05:54:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 05:54:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 05:54:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 05:54:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 05:54:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:54:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 05:54:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 05:54:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:54:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:54:14,484 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:54:14,486 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:54:15,456 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:54:15,481 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:54:15,481 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:54:15,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:54:15 BoogieIcfgContainer [2021-11-20 05:54:15,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:54:15,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:54:15,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:54:15,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:54:15,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:54:12" (1/3) ... [2021-11-20 05:54:15,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fca3a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:54:15, skipping insertion in model container [2021-11-20 05:54:15,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:54:13" (2/3) ... [2021-11-20 05:54:15,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fca3a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:54:15, skipping insertion in model container [2021-11-20 05:54:15,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:54:15" (3/3) ... [2021-11-20 05:54:15,499 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2021-11-20 05:54:15,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:54:15,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:54:15,570 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:54:15,578 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:54:15,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:54:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 239 states have (on average 1.5313807531380754) internal successors, (366), 243 states have internal predecessors, (366), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-20 05:54:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:54:15,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:15,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:15,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1073082891, now seen corresponding path program 1 times [2021-11-20 05:54:15,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:15,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106035776] [2021-11-20 05:54:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:15,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:54:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:54:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:54:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 05:54:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-20 05:54:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:54:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:54:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:54:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 05:54:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:54:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 05:54:16,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:16,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106035776] [2021-11-20 05:54:16,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106035776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:16,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968160587] [2021-11-20 05:54:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:16,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:16,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:16,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:16,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:54:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:16,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 05:54:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:54:16,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:16,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968160587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:16,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:16,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-11-20 05:54:16,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506981659] [2021-11-20 05:54:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:17,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:54:17,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:54:17,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:54:17,065 INFO L87 Difference]: Start difference. First operand has 306 states, 239 states have (on average 1.5313807531380754) internal successors, (366), 243 states have internal predecessors, (366), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:17,140 INFO L93 Difference]: Finished difference Result 457 states and 670 transitions. [2021-11-20 05:54:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:54:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2021-11-20 05:54:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:17,159 INFO L225 Difference]: With dead ends: 457 [2021-11-20 05:54:17,160 INFO L226 Difference]: Without dead ends: 298 [2021-11-20 05:54:17,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:54:17,171 INFO L933 BasicCegarLoop]: 452 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, 452 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 [2021-11-20 05:54:17,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-20 05:54:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-20 05:54:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 233 states have (on average 1.5236051502145922) internal successors, (355), 235 states have internal predecessors, (355), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-20 05:54:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 444 transitions. [2021-11-20 05:54:17,252 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 444 transitions. Word has length 103 [2021-11-20 05:54:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:17,254 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 444 transitions. [2021-11-20 05:54:17,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 444 transitions. [2021-11-20 05:54:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 05:54:17,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:17,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:17,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:17,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:17,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1556511141, now seen corresponding path program 1 times [2021-11-20 05:54:17,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:17,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292581] [2021-11-20 05:54:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:17,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:54:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:54:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:54:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:54:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 05:54:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 05:54:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:54:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:54:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:54:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:54:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 05:54:17,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:17,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292581] [2021-11-20 05:54:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292581] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503564512] [2021-11-20 05:54:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:17,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:17,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:17,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:54:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:54:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:54:18,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:18,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503564512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:18,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:18,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 05:54:18,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996220805] [2021-11-20 05:54:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:18,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:54:18,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:54:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:54:18,291 INFO L87 Difference]: Start difference. First operand 298 states and 444 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:18,349 INFO L93 Difference]: Finished difference Result 446 states and 647 transitions. [2021-11-20 05:54:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:54:18,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2021-11-20 05:54:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:18,356 INFO L225 Difference]: With dead ends: 446 [2021-11-20 05:54:18,356 INFO L226 Difference]: Without dead ends: 301 [2021-11-20 05:54:18,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:54:18,359 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 1 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 882 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 [2021-11-20 05:54:18,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 882 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-20 05:54:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-11-20 05:54:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 235 states have (on average 1.5191489361702128) internal successors, (357), 237 states have internal predecessors, (357), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-20 05:54:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 446 transitions. [2021-11-20 05:54:18,419 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 446 transitions. Word has length 104 [2021-11-20 05:54:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:18,420 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 446 transitions. [2021-11-20 05:54:18,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 446 transitions. [2021-11-20 05:54:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 05:54:18,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:18,431 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:18,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:18,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:18,657 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:18,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash 92532544, now seen corresponding path program 1 times [2021-11-20 05:54:18,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:18,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146649107] [2021-11-20 05:54:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:18,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:54:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:54:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:54:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 05:54:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:54:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:54:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 05:54:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:54:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:54:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:54:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:54:18,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146649107] [2021-11-20 05:54:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146649107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:18,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780955151] [2021-11-20 05:54:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:18,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:18,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:54:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:54:19,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:54:19,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:19,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780955151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:19,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:19,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 05:54:19,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187731703] [2021-11-20 05:54:19,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:54:19,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:54:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:54:19,612 INFO L87 Difference]: Start difference. First operand 300 states and 446 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:19,690 INFO L93 Difference]: Finished difference Result 630 states and 951 transitions. [2021-11-20 05:54:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:54:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2021-11-20 05:54:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:19,703 INFO L225 Difference]: With dead ends: 630 [2021-11-20 05:54:19,704 INFO L226 Difference]: Without dead ends: 357 [2021-11-20 05:54:19,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:54:19,707 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 107 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:19,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 852 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-20 05:54:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 349. [2021-11-20 05:54:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.534798534798535) internal successors, (419), 275 states have internal predecessors, (419), 57 states have call successors, (57), 19 states have call predecessors, (57), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-20 05:54:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 530 transitions. [2021-11-20 05:54:19,748 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 530 transitions. Word has length 113 [2021-11-20 05:54:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:19,749 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 530 transitions. [2021-11-20 05:54:19,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 530 transitions. [2021-11-20 05:54:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 05:54:19,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:19,780 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:19,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:20,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:20,001 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -17056686, now seen corresponding path program 1 times [2021-11-20 05:54:20,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:20,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679687523] [2021-11-20 05:54:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:20,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:54:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:54:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:54:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 05:54:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 05:54:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 05:54:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 05:54:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 05:54:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 05:54:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 05:54:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:54:20,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679687523] [2021-11-20 05:54:20,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679687523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101757399] [2021-11-20 05:54:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:20,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:20,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:20,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:20,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:54:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:54:20,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 05:54:20,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:20,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101757399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:20,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:20,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 05:54:20,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651965258] [2021-11-20 05:54:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:54:20,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:54:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:54:20,795 INFO L87 Difference]: Start difference. First operand 349 states and 530 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:20,907 INFO L93 Difference]: Finished difference Result 689 states and 1050 transitions. [2021-11-20 05:54:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:54:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-11-20 05:54:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:20,916 INFO L225 Difference]: With dead ends: 689 [2021-11-20 05:54:20,916 INFO L226 Difference]: Without dead ends: 351 [2021-11-20 05:54:20,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:20,927 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 125 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:20,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1596 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-20 05:54:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-20 05:54:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.532846715328467) internal successors, (420), 277 states have internal predecessors, (420), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2021-11-20 05:54:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 533 transitions. [2021-11-20 05:54:20,991 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 533 transitions. Word has length 114 [2021-11-20 05:54:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:20,993 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 533 transitions. [2021-11-20 05:54:20,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 533 transitions. [2021-11-20 05:54:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 05:54:21,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:21,000 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:21,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-20 05:54:21,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:21,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1387001591, now seen corresponding path program 1 times [2021-11-20 05:54:21,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:21,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932777054] [2021-11-20 05:54:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:21,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 05:54:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 05:54:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:54:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:54:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:54:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 05:54:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 05:54:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:54:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 05:54:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 05:54:21,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932777054] [2021-11-20 05:54:21,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932777054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:21,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809696481] [2021-11-20 05:54:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:21,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:21,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:21,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:54:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:54:21,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 05:54:22,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:54:22,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809696481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:22,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:22,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-20 05:54:22,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583219155] [2021-11-20 05:54:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:22,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:54:22,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:54:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:54:22,075 INFO L87 Difference]: Start difference. First operand 351 states and 533 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:22,177 INFO L93 Difference]: Finished difference Result 691 states and 1055 transitions. [2021-11-20 05:54:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:54:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-20 05:54:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:22,184 INFO L225 Difference]: With dead ends: 691 [2021-11-20 05:54:22,185 INFO L226 Difference]: Without dead ends: 353 [2021-11-20 05:54:22,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:54:22,188 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 124 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:22,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1585 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-20 05:54:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-11-20 05:54:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 275 states have (on average 1.530909090909091) internal successors, (421), 279 states have internal predecessors, (421), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2021-11-20 05:54:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 539 transitions. [2021-11-20 05:54:22,224 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 539 transitions. Word has length 115 [2021-11-20 05:54:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:22,225 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 539 transitions. [2021-11-20 05:54:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 539 transitions. [2021-11-20 05:54:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 05:54:22,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:22,232 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:22,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:22,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1836644493, now seen corresponding path program 1 times [2021-11-20 05:54:22,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:22,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138060018] [2021-11-20 05:54:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:22,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:54:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 05:54:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 05:54:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:54:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 05:54:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:54:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 05:54:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:54:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:54:22,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:22,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138060018] [2021-11-20 05:54:22,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138060018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:22,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:22,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:54:22,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400157517] [2021-11-20 05:54:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:22,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:54:22,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:54:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:54:22,595 INFO L87 Difference]: Start difference. First operand 353 states and 539 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:24,471 INFO L93 Difference]: Finished difference Result 786 states and 1203 transitions. [2021-11-20 05:54:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:54:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-11-20 05:54:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:24,479 INFO L225 Difference]: With dead ends: 786 [2021-11-20 05:54:24,479 INFO L226 Difference]: Without dead ends: 456 [2021-11-20 05:54:24,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:54:24,483 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 1040 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:24,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 1517 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 05:54:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-20 05:54:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 353. [2021-11-20 05:54:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 275 states have (on average 1.530909090909091) internal successors, (421), 279 states have internal predecessors, (421), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2021-11-20 05:54:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 538 transitions. [2021-11-20 05:54:24,553 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 538 transitions. Word has length 116 [2021-11-20 05:54:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:24,554 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 538 transitions. [2021-11-20 05:54:24,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 538 transitions. [2021-11-20 05:54:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 05:54:24,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:24,558 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:24,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:54:24,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1365807302, now seen corresponding path program 2 times [2021-11-20 05:54:24,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966058245] [2021-11-20 05:54:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:24,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 05:54:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 05:54:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 05:54:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:54:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 05:54:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:54:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:54:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:54:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:54:24,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:24,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966058245] [2021-11-20 05:54:24,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966058245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:24,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:24,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:54:24,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348385121] [2021-11-20 05:54:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:54:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:54:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:54:24,739 INFO L87 Difference]: Start difference. First operand 353 states and 538 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:26,523 INFO L93 Difference]: Finished difference Result 788 states and 1206 transitions. [2021-11-20 05:54:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:54:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2021-11-20 05:54:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:26,529 INFO L225 Difference]: With dead ends: 788 [2021-11-20 05:54:26,530 INFO L226 Difference]: Without dead ends: 458 [2021-11-20 05:54:26,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:54:26,534 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 1034 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:26,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1523 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 05:54:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-20 05:54:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 355. [2021-11-20 05:54:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 276 states have (on average 1.5289855072463767) internal successors, (422), 281 states have internal predecessors, (422), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (62), 54 states have call predecessors, (62), 54 states have call successors, (62) [2021-11-20 05:54:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 541 transitions. [2021-11-20 05:54:26,589 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 541 transitions. Word has length 117 [2021-11-20 05:54:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:26,591 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 541 transitions. [2021-11-20 05:54:26,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:54:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 541 transitions. [2021-11-20 05:54:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 05:54:26,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:26,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:26,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:54:26,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -32828690, now seen corresponding path program 1 times [2021-11-20 05:54:26,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:26,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911448982] [2021-11-20 05:54:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:26,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:54:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:54:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 05:54:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:54:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:54:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:54:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:54:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 05:54:26,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911448982] [2021-11-20 05:54:26,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911448982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:26,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:26,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:54:26,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014237440] [2021-11-20 05:54:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:26,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:54:26,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:54:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:54:26,843 INFO L87 Difference]: Start difference. First operand 355 states and 541 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:54:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:29,419 INFO L93 Difference]: Finished difference Result 786 states and 1201 transitions. [2021-11-20 05:54:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:54:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2021-11-20 05:54:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:29,428 INFO L225 Difference]: With dead ends: 786 [2021-11-20 05:54:29,428 INFO L226 Difference]: Without dead ends: 458 [2021-11-20 05:54:29,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:54:29,432 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 1146 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:29,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 1970 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:54:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-20 05:54:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 355. [2021-11-20 05:54:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 276 states have (on average 1.5289855072463767) internal successors, (422), 281 states have internal predecessors, (422), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2021-11-20 05:54:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 540 transitions. [2021-11-20 05:54:29,505 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 540 transitions. Word has length 118 [2021-11-20 05:54:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:29,506 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 540 transitions. [2021-11-20 05:54:29,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:54:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 540 transitions. [2021-11-20 05:54:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 05:54:29,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:29,511 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:29,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:54:29,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -202187804, now seen corresponding path program 2 times [2021-11-20 05:54:29,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:29,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145698156] [2021-11-20 05:54:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:29,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 05:54:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 05:54:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 05:54:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 05:54:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:54:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:54:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:54:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 05:54:29,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:29,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145698156] [2021-11-20 05:54:29,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145698156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:29,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:29,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:54:29,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129248731] [2021-11-20 05:54:29,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:29,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:54:29,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:29,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:54:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:54:29,757 INFO L87 Difference]: Start difference. First operand 355 states and 540 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:54:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:32,143 INFO L93 Difference]: Finished difference Result 788 states and 1207 transitions. [2021-11-20 05:54:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:54:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2021-11-20 05:54:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:32,148 INFO L225 Difference]: With dead ends: 788 [2021-11-20 05:54:32,149 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 05:54:32,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:54:32,152 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 1141 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:32,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 1971 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 05:54:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 05:54:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 357. [2021-11-20 05:54:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 277 states have (on average 1.5270758122743682) internal successors, (423), 283 states have internal predecessors, (423), 57 states have call successors, (57), 19 states have call predecessors, (57), 22 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2021-11-20 05:54:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 546 transitions. [2021-11-20 05:54:32,193 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 546 transitions. Word has length 119 [2021-11-20 05:54:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:32,193 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 546 transitions. [2021-11-20 05:54:32,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:54:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 546 transitions. [2021-11-20 05:54:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 05:54:32,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:32,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:54:32,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 91755657, now seen corresponding path program 1 times [2021-11-20 05:54:32,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:32,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932167802] [2021-11-20 05:54:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:32,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:54:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:54:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 05:54:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:54:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:54:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 05:54:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:54:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:54:32,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932167802] [2021-11-20 05:54:32,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932167802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6172309] [2021-11-20 05:54:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:32,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:54:32,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:54:32,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:54:32,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:54:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:32,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:54:32,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:32,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:33,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6172309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:33,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:54:33,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-11-20 05:54:33,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407949540] [2021-11-20 05:54:33,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:33,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:54:33,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:54:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:54:33,248 INFO L87 Difference]: Start difference. First operand 357 states and 546 transitions. Second operand has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 05:54:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:37,269 INFO L93 Difference]: Finished difference Result 1467 states and 2435 transitions. [2021-11-20 05:54:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:54:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 120 [2021-11-20 05:54:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:37,283 INFO L225 Difference]: With dead ends: 1467 [2021-11-20 05:54:37,283 INFO L226 Difference]: Without dead ends: 1141 [2021-11-20 05:54:37,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-20 05:54:37,288 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 3131 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 4390 mSolverCounterSat, 1166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1166 IncrementalHoareTripleChecker+Valid, 4390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:37,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3133 Valid, 3482 Invalid, 5556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1166 Valid, 4390 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 05:54:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-20 05:54:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 685. [2021-11-20 05:54:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 541 states have (on average 1.578558225508318) internal successors, (854), 547 states have internal predecessors, (854), 121 states have call successors, (121), 19 states have call predecessors, (121), 22 states have return successors, (140), 118 states have call predecessors, (140), 118 states have call successors, (140) [2021-11-20 05:54:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1115 transitions. [2021-11-20 05:54:37,376 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1115 transitions. Word has length 120 [2021-11-20 05:54:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:37,376 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 1115 transitions. [2021-11-20 05:54:37,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 05:54:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1115 transitions. [2021-11-20 05:54:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 05:54:37,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:37,383 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:37,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:37,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_874972ca-f6b2-4e36-b20c-90d5d7a12e1f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 05:54:37,597 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -36455390, now seen corresponding path program 1 times [2021-11-20 05:54:37,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:37,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281964125] [2021-11-20 05:54:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:37,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:54:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 05:54:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 05:54:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:54:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 05:54:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:54:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 05:54:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:37,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:37,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281964125] [2021-11-20 05:54:37,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281964125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:37,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:37,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:37,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700129765] [2021-11-20 05:54:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:37,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:37,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:37,755 INFO L87 Difference]: Start difference. First operand 685 states and 1115 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:39,220 INFO L93 Difference]: Finished difference Result 1703 states and 2838 transitions. [2021-11-20 05:54:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2021-11-20 05:54:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:39,232 INFO L225 Difference]: With dead ends: 1703 [2021-11-20 05:54:39,233 INFO L226 Difference]: Without dead ends: 1096 [2021-11-20 05:54:39,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:39,237 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1030 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:39,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 1287 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 05:54:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-20 05:54:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 985. [2021-11-20 05:54:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 777 states have (on average 1.5945945945945945) internal successors, (1239), 783 states have internal predecessors, (1239), 185 states have call successors, (185), 19 states have call predecessors, (185), 22 states have return successors, (214), 182 states have call predecessors, (214), 182 states have call successors, (214) [2021-11-20 05:54:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1638 transitions. [2021-11-20 05:54:39,342 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1638 transitions. Word has length 123 [2021-11-20 05:54:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:39,343 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 1638 transitions. [2021-11-20 05:54:39,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1638 transitions. [2021-11-20 05:54:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 05:54:39,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:39,351 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:39,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:54:39,352 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1528974075, now seen corresponding path program 1 times [2021-11-20 05:54:39,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:39,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792249885] [2021-11-20 05:54:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:39,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 05:54:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:54:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:54:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:54:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:54:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:54:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 05:54:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:39,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:39,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792249885] [2021-11-20 05:54:39,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792249885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:39,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:39,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:39,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847973398] [2021-11-20 05:54:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:39,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:39,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:39,491 INFO L87 Difference]: Start difference. First operand 985 states and 1638 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:40,844 INFO L93 Difference]: Finished difference Result 2443 states and 4118 transitions. [2021-11-20 05:54:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:40,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-11-20 05:54:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:40,862 INFO L225 Difference]: With dead ends: 2443 [2021-11-20 05:54:40,862 INFO L226 Difference]: Without dead ends: 1589 [2021-11-20 05:54:40,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:40,868 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1028 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:40,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 1251 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 05:54:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-11-20 05:54:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1478. [2021-11-20 05:54:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1175 states have (on average 1.6008510638297873) internal successors, (1881), 1181 states have internal predecessors, (1881), 280 states have call successors, (280), 19 states have call predecessors, (280), 22 states have return successors, (309), 277 states have call predecessors, (309), 277 states have call successors, (309) [2021-11-20 05:54:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2470 transitions. [2021-11-20 05:54:41,025 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2470 transitions. Word has length 124 [2021-11-20 05:54:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:41,026 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2470 transitions. [2021-11-20 05:54:41,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2470 transitions. [2021-11-20 05:54:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 05:54:41,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:41,040 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:41,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:54:41,040 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -611425968, now seen corresponding path program 1 times [2021-11-20 05:54:41,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:41,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205361691] [2021-11-20 05:54:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:41,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:54:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:54:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 05:54:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:54:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:54:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:54:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:54:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:41,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:41,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205361691] [2021-11-20 05:54:41,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205361691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:41,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:41,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:41,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879616557] [2021-11-20 05:54:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:41,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:41,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:41,223 INFO L87 Difference]: Start difference. First operand 1478 states and 2470 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:42,510 INFO L93 Difference]: Finished difference Result 3545 states and 6036 transitions. [2021-11-20 05:54:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:42,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-11-20 05:54:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:42,532 INFO L225 Difference]: With dead ends: 3545 [2021-11-20 05:54:42,532 INFO L226 Difference]: Without dead ends: 2333 [2021-11-20 05:54:42,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:42,540 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1025 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:42,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 1252 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-11-20 05:54:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2222. [2021-11-20 05:54:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1796 states have (on average 1.6057906458797326) internal successors, (2884), 1802 states have internal predecessors, (2884), 403 states have call successors, (403), 19 states have call predecessors, (403), 22 states have return successors, (448), 400 states have call predecessors, (448), 400 states have call successors, (448) [2021-11-20 05:54:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3735 transitions. [2021-11-20 05:54:42,783 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3735 transitions. Word has length 125 [2021-11-20 05:54:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:42,784 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 3735 transitions. [2021-11-20 05:54:42,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3735 transitions. [2021-11-20 05:54:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 05:54:42,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:42,801 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:42,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:54:42,801 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1926112186, now seen corresponding path program 1 times [2021-11-20 05:54:42,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:42,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684930350] [2021-11-20 05:54:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:42,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 05:54:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:54:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:54:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:54:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:54:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:54:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:54:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:42,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:42,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684930350] [2021-11-20 05:54:42,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684930350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:42,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:42,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:42,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852859038] [2021-11-20 05:54:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:42,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:42,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:42,941 INFO L87 Difference]: Start difference. First operand 2222 states and 3735 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:44,279 INFO L93 Difference]: Finished difference Result 5254 states and 9016 transitions. [2021-11-20 05:54:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:44,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-11-20 05:54:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:44,308 INFO L225 Difference]: With dead ends: 5254 [2021-11-20 05:54:44,308 INFO L226 Difference]: Without dead ends: 3517 [2021-11-20 05:54:44,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:44,317 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1024 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:44,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 1250 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-20 05:54:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3406. [2021-11-20 05:54:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 2801 states have (on average 1.608711174580507) internal successors, (4506), 2807 states have internal predecessors, (4506), 582 states have call successors, (582), 19 states have call predecessors, (582), 22 states have return successors, (653), 579 states have call predecessors, (653), 579 states have call successors, (653) [2021-11-20 05:54:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5741 transitions. [2021-11-20 05:54:44,765 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5741 transitions. Word has length 126 [2021-11-20 05:54:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:44,766 INFO L470 AbstractCegarLoop]: Abstraction has 3406 states and 5741 transitions. [2021-11-20 05:54:44,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5741 transitions. [2021-11-20 05:54:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 05:54:44,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:44,786 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:54:44,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1639798572, now seen corresponding path program 1 times [2021-11-20 05:54:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:44,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12056869] [2021-11-20 05:54:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:44,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 05:54:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:54:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 05:54:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:54:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 05:54:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 05:54:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 05:54:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:44,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:44,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12056869] [2021-11-20 05:54:44,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12056869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:44,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:44,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360115025] [2021-11-20 05:54:44,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:44,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:44,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:44,946 INFO L87 Difference]: Start difference. First operand 3406 states and 5741 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:46,526 INFO L93 Difference]: Finished difference Result 8327 states and 14332 transitions. [2021-11-20 05:54:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-11-20 05:54:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:46,572 INFO L225 Difference]: With dead ends: 8327 [2021-11-20 05:54:46,572 INFO L226 Difference]: Without dead ends: 5658 [2021-11-20 05:54:46,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:46,587 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1022 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:46,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 1282 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-11-20 05:54:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5547. [2021-11-20 05:54:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 4566 states have (on average 1.6014016644765658) internal successors, (7312), 4572 states have internal predecessors, (7312), 958 states have call successors, (958), 19 states have call predecessors, (958), 22 states have return successors, (1073), 955 states have call predecessors, (1073), 955 states have call successors, (1073) [2021-11-20 05:54:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 9343 transitions. [2021-11-20 05:54:47,310 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 9343 transitions. Word has length 127 [2021-11-20 05:54:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 9343 transitions. [2021-11-20 05:54:47,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 9343 transitions. [2021-11-20 05:54:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 05:54:47,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:47,339 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:47,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:54:47,339 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 558124650, now seen corresponding path program 1 times [2021-11-20 05:54:47,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895604122] [2021-11-20 05:54:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:47,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 05:54:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:54:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 05:54:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 05:54:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 05:54:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:54:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 05:54:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:47,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:47,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895604122] [2021-11-20 05:54:47,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895604122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:47,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:47,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:47,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034696966] [2021-11-20 05:54:47,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:47,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:47,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:47,474 INFO L87 Difference]: Start difference. First operand 5547 states and 9343 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:49,117 INFO L93 Difference]: Finished difference Result 13749 states and 23633 transitions. [2021-11-20 05:54:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:49,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-11-20 05:54:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:49,196 INFO L225 Difference]: With dead ends: 13749 [2021-11-20 05:54:49,196 INFO L226 Difference]: Without dead ends: 9341 [2021-11-20 05:54:49,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:49,221 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 1019 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:49,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 1260 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-11-20 05:54:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9230. [2021-11-20 05:54:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 7643 states have (on average 1.5987177809760564) internal successors, (12219), 7649 states have internal predecessors, (12219), 1564 states have call successors, (1564), 19 states have call predecessors, (1564), 22 states have return successors, (1757), 1561 states have call predecessors, (1757), 1561 states have call successors, (1757) [2021-11-20 05:54:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 15540 transitions. [2021-11-20 05:54:50,315 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 15540 transitions. Word has length 128 [2021-11-20 05:54:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:50,316 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 15540 transitions. [2021-11-20 05:54:50,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 15540 transitions. [2021-11-20 05:54:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 05:54:50,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:50,363 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:50,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:54:50,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1227996238, now seen corresponding path program 1 times [2021-11-20 05:54:50,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617912584] [2021-11-20 05:54:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:50,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:54:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 05:54:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:54:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:54:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:54:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 05:54:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:54:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:50,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:50,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617912584] [2021-11-20 05:54:50,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617912584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:50,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:50,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:50,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166650912] [2021-11-20 05:54:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:50,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:50,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:50,517 INFO L87 Difference]: Start difference. First operand 9230 states and 15540 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:52,480 INFO L93 Difference]: Finished difference Result 23933 states and 41074 transitions. [2021-11-20 05:54:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:52,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-11-20 05:54:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:52,563 INFO L225 Difference]: With dead ends: 23933 [2021-11-20 05:54:52,564 INFO L226 Difference]: Without dead ends: 16294 [2021-11-20 05:54:52,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:52,599 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 1017 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:52,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 1305 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16294 states. [2021-11-20 05:54:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16294 to 16183. [2021-11-20 05:54:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 13393 states have (on average 1.5895617113417457) internal successors, (21289), 13399 states have internal predecessors, (21289), 2767 states have call successors, (2767), 19 states have call predecessors, (2767), 22 states have return successors, (3104), 2764 states have call predecessors, (3104), 2764 states have call successors, (3104) [2021-11-20 05:54:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 27160 transitions. [2021-11-20 05:54:54,140 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 27160 transitions. Word has length 129 [2021-11-20 05:54:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:54,140 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 27160 transitions. [2021-11-20 05:54:54,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 27160 transitions. [2021-11-20 05:54:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 05:54:54,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:54,197 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:54,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 05:54:54,197 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:54:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash 270844235, now seen corresponding path program 1 times [2021-11-20 05:54:54,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:54:54,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900516109] [2021-11-20 05:54:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:54,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:54:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:54:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:54:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:54:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:54:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:54:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:54:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:54:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:54:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:54:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 05:54:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:54:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 05:54:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 05:54:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:54:54,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:54:54,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900516109] [2021-11-20 05:54:54,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900516109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:54,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:54,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:54:54,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056588990] [2021-11-20 05:54:54,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:54,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:54,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:54:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:54:54,340 INFO L87 Difference]: Start difference. First operand 16183 states and 27160 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:54:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:57,632 INFO L93 Difference]: Finished difference Result 42899 states and 73471 transitions. [2021-11-20 05:54:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:54:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-11-20 05:54:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:57,783 INFO L225 Difference]: With dead ends: 42899 [2021-11-20 05:54:57,783 INFO L226 Difference]: Without dead ends: 28949 [2021-11-20 05:54:57,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:57,825 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1016 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:57,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1255 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 05:54:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28949 states. [2021-11-20 05:55:00,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28949 to 28838. [2021-11-20 05:55:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28838 states, 24009 states have (on average 1.585072264567454) internal successors, (38056), 24015 states have internal predecessors, (38056), 4806 states have call successors, (4806), 19 states have call predecessors, (4806), 22 states have return successors, (5417), 4803 states have call predecessors, (5417), 4803 states have call successors, (5417) [2021-11-20 05:55:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 48279 transitions. [2021-11-20 05:55:00,310 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 48279 transitions. Word has length 130 [2021-11-20 05:55:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:00,311 INFO L470 AbstractCegarLoop]: Abstraction has 28838 states and 48279 transitions. [2021-11-20 05:55:00,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:55:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 48279 transitions. [2021-11-20 05:55:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 05:55:00,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:00,360 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:00,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 05:55:00,360 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 114018768, now seen corresponding path program 1 times [2021-11-20 05:55:00,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:00,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276159050] [2021-11-20 05:55:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:00,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:55:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:55:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:55:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:55:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:55:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:55:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:55:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:55:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:55:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:55:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:55:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:55:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 05:55:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:55:00,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:00,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276159050] [2021-11-20 05:55:00,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276159050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:00,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:00,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:55:00,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257440329] [2021-11-20 05:55:00,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:00,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:55:00,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:55:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:55:00,529 INFO L87 Difference]: Start difference. First operand 28838 states and 48279 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:55:04,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:04,902 INFO L93 Difference]: Finished difference Result 78661 states and 133835 transitions. [2021-11-20 05:55:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:55:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-11-20 05:55:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:05,317 INFO L225 Difference]: With dead ends: 78661 [2021-11-20 05:55:05,318 INFO L226 Difference]: Without dead ends: 52828 [2021-11-20 05:55:05,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:55:05,387 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 1014 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:05,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1264 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 05:55:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52828 states. [2021-11-20 05:55:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52828 to 52717. [2021-11-20 05:55:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52717 states, 44173 states have (on average 1.5792226020419713) internal successors, (69759), 44179 states have internal predecessors, (69759), 8521 states have call successors, (8521), 19 states have call predecessors, (8521), 22 states have return successors, (9664), 8518 states have call predecessors, (9664), 8518 states have call successors, (9664) [2021-11-20 05:55:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52717 states to 52717 states and 87944 transitions. [2021-11-20 05:55:10,688 INFO L78 Accepts]: Start accepts. Automaton has 52717 states and 87944 transitions. Word has length 131 [2021-11-20 05:55:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:10,689 INFO L470 AbstractCegarLoop]: Abstraction has 52717 states and 87944 transitions. [2021-11-20 05:55:10,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:55:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 52717 states and 87944 transitions. [2021-11-20 05:55:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 05:55:10,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:10,739 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:10,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 05:55:10,739 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1190471755, now seen corresponding path program 1 times [2021-11-20 05:55:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:10,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513451916] [2021-11-20 05:55:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:10,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:55:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:55:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:55:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:55:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:55:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:55:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:55:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:55:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:55:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:55:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:55:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:55:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 05:55:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:55:10,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:10,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513451916] [2021-11-20 05:55:10,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513451916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:10,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:10,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:55:10,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220291506] [2021-11-20 05:55:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:10,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:55:10,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:55:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:55:10,883 INFO L87 Difference]: Start difference. First operand 52717 states and 87944 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:55:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:17,842 INFO L93 Difference]: Finished difference Result 98432 states and 167765 transitions. [2021-11-20 05:55:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:55:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-11-20 05:55:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:18,314 INFO L225 Difference]: With dead ends: 98432 [2021-11-20 05:55:18,314 INFO L226 Difference]: Without dead ends: 98287 [2021-11-20 05:55:18,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:55:18,357 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1011 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:18,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1261 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:55:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98287 states. [2021-11-20 05:55:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98287 to 98176. [2021-11-20 05:55:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98176 states, 82833 states have (on average 1.5719097461156786) internal successors, (130206), 82839 states have internal predecessors, (130206), 15320 states have call successors, (15320), 19 states have call predecessors, (15320), 22 states have return successors, (17509), 15317 states have call predecessors, (17509), 15317 states have call successors, (17509) [2021-11-20 05:55:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98176 states to 98176 states and 163035 transitions. [2021-11-20 05:55:25,921 INFO L78 Accepts]: Start accepts. Automaton has 98176 states and 163035 transitions. Word has length 132 [2021-11-20 05:55:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:25,922 INFO L470 AbstractCegarLoop]: Abstraction has 98176 states and 163035 transitions. [2021-11-20 05:55:25,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:55:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 98176 states and 163035 transitions. [2021-11-20 05:55:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 05:55:25,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:25,988 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:25,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 05:55:25,988 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1909614191, now seen corresponding path program 1 times [2021-11-20 05:55:25,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005349938] [2021-11-20 05:55:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:25,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:55:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:55:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:55:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:55:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:55:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:55:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:55:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 05:55:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:55:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:55:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:55:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 05:55:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 05:55:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:55:26,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005349938] [2021-11-20 05:55:26,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005349938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:26,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:26,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 05:55:26,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488457531] [2021-11-20 05:55:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:26,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:55:26,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:55:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:55:26,230 INFO L87 Difference]: Start difference. First operand 98176 states and 163035 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:55:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:37,457 INFO L93 Difference]: Finished difference Result 99035 states and 167534 transitions. [2021-11-20 05:55:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 05:55:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2021-11-20 05:55:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:37,914 INFO L225 Difference]: With dead ends: 99035 [2021-11-20 05:55:37,914 INFO L226 Difference]: Without dead ends: 98896 [2021-11-20 05:55:37,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=408, Invalid=1398, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 05:55:37,969 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 2403 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 5935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:37,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 1957 Invalid, 5935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 05:55:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98896 states.