./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa --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 d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:19:07,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:19:07,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:19:07,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:19:07,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:19:07,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:19:07,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:19:07,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:19:07,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:19:07,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:19:07,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:19:07,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:19:07,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:19:07,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:19:07,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:19:07,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:19:07,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:19:07,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:19:07,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:19:07,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:19:07,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:19:07,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:19:07,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:19:07,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:19:07,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:19:07,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:19:07,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:19:07,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:19:07,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:19:07,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:19:07,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:19:07,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:19:07,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:19:07,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:19:07,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:19:07,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:19:07,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:19:07,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:19:07,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:19:07,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:19:07,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:19:07,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:19:07,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:19:07,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:19:07,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:19:07,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:19:07,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:19:07,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:19:07,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:19:07,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:19:07,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:19:07,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:19:07,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:19:07,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:19:07,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:19:07,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:19:07,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:19:07,236 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_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13022ac5777526b0e211d2bc2c4786b4fd03965aed567ff73b5cfbb8c2cd97a [2021-12-06 20:19:07,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:19:07,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:19:07,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:19:07,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:19:07,421 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:19:07,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2021-12-06 20:19:07,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/data/840697e10/8e07d18116f4446693558b6e90bc21d3/FLAGbd67fcaba [2021-12-06 20:19:07,901 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:19:07,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c [2021-12-06 20:19:07,917 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/data/840697e10/8e07d18116f4446693558b6e90bc21d3/FLAGbd67fcaba [2021-12-06 20:19:07,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/data/840697e10/8e07d18116f4446693558b6e90bc21d3 [2021-12-06 20:19:07,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:19:07,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:19:07,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:19:07,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:19:07,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:19:07,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:19:07" (1/1) ... [2021-12-06 20:19:07,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b860892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:07, skipping insertion in model container [2021-12-06 20:19:07,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:19:07" (1/1) ... [2021-12-06 20:19:07,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:19:07,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:19:08,191 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_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2021-12-06 20:19:08,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:19:08,311 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:19:08,348 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_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/sv-benchmarks/c/product-lines/email_spec11_product39.cil.c[17959,17972] [2021-12-06 20:19:08,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:19:08,434 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:19:08,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08 WrapperNode [2021-12-06 20:19:08,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:19:08,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:19:08,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:19:08,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:19:08,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,515 INFO L137 Inliner]: procedures = 124, calls = 195, calls flagged for inlining = 47, calls inlined = 43, statements flattened = 813 [2021-12-06 20:19:08,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:19:08,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:19:08,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:19:08,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:19:08,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:19:08,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:19:08,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:19:08,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:19:08,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (1/1) ... [2021-12-06 20:19:08,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:19:08,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:08,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:19:08,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:19:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-06 20:19:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-06 20:19:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-06 20:19:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-06 20:19:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 20:19:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 20:19:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-06 20:19:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-06 20:19:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 20:19:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 20:19:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 20:19:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 20:19:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 20:19:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 20:19:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:19:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 20:19:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 20:19:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-06 20:19:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-06 20:19:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:19:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:19:08,764 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:19:08,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:19:09,209 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:19:09,219 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:19:09,219 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:19:09,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:19:09 BoogieIcfgContainer [2021-12-06 20:19:09,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:19:09,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:19:09,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:19:09,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:19:09,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:19:07" (1/3) ... [2021-12-06 20:19:09,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:19:09, skipping insertion in model container [2021-12-06 20:19:09,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:08" (2/3) ... [2021-12-06 20:19:09,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb2815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:19:09, skipping insertion in model container [2021-12-06 20:19:09,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:19:09" (3/3) ... [2021-12-06 20:19:09,230 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product39.cil.c [2021-12-06 20:19:09,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:19:09,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:19:09,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:19:09,276 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 [2021-12-06 20:19:09,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:19:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 242 states have (on average 1.5743801652892562) internal successors, (381), 245 states have internal predecessors, (381), 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) [2021-12-06 20:19:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 20:19:09,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:09,314 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] [2021-12-06 20:19:09,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1924070755, now seen corresponding path program 1 times [2021-12-06 20:19:09,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:09,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953924879] [2021-12-06 20:19:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:09,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:19:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:19:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:19:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 20:19:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:19:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:19:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:19:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 20:19:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:19:09,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:09,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953924879] [2021-12-06 20:19:09,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953924879] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834277613] [2021-12-06 20:19:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:09,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:09,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:09,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:09,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:19:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 20:19:09,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 20:19:09,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:09,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834277613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:09,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:09,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 20:19:10,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664817100] [2021-12-06 20:19:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:10,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:19:10,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:19:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:10,035 INFO L87 Difference]: Start difference. First operand has 309 states, 242 states have (on average 1.5743801652892562) internal successors, (381), 245 states have internal predecessors, (381), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:10,082 INFO L93 Difference]: Finished difference Result 425 states and 636 transitions. [2021-12-06 20:19:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:19:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2021-12-06 20:19:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:10,095 INFO L225 Difference]: With dead ends: 425 [2021-12-06 20:19:10,095 INFO L226 Difference]: Without dead ends: 302 [2021-12-06 20:19:10,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:10,101 INFO L933 BasicCegarLoop]: 469 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, 469 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 [2021-12-06 20:19:10,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:19:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-06 20:19:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-12-06 20:19:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 236 states have (on average 1.5677966101694916) internal successors, (370), 238 states have internal predecessors, (370), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-06 20:19:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 461 transitions. [2021-12-06 20:19:10,150 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 461 transitions. Word has length 96 [2021-12-06 20:19:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:10,152 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 461 transitions. [2021-12-06 20:19:10,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 461 transitions. [2021-12-06 20:19:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 20:19:10,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:10,158 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] [2021-12-06 20:19:10,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:19:10,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 20:19:10,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1955701627, now seen corresponding path program 1 times [2021-12-06 20:19:10,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:10,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209232275] [2021-12-06 20:19:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:10,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:19:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:19:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 20:19:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:19:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 20:19:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 20:19:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 20:19:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:19:10,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209232275] [2021-12-06 20:19:10,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209232275] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222312843] [2021-12-06 20:19:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:10,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:10,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:10,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:19:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:19:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 20:19:10,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:10,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222312843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:10,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:10,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 20:19:10,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280369867] [2021-12-06 20:19:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:10,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:10,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:10,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:10,911 INFO L87 Difference]: Start difference. First operand 302 states and 461 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:10,936 INFO L93 Difference]: Finished difference Result 415 states and 614 transitions. [2021-12-06 20:19:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:10,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2021-12-06 20:19:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:10,939 INFO L225 Difference]: With dead ends: 415 [2021-12-06 20:19:10,939 INFO L226 Difference]: Without dead ends: 305 [2021-12-06 20:19:10,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:10,942 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 916 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 [2021-12-06 20:19:10,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 916 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:19:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-06 20:19:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-12-06 20:19:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 238 states have (on average 1.5630252100840336) internal successors, (372), 240 states have internal predecessors, (372), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-06 20:19:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2021-12-06 20:19:10,962 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 97 [2021-12-06 20:19:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:10,962 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2021-12-06 20:19:10,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2021-12-06 20:19:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 20:19:10,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:10,967 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] [2021-12-06 20:19:10,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:19:11,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 20:19:11,169 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash 724838734, now seen corresponding path program 1 times [2021-12-06 20:19:11,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:11,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245023074] [2021-12-06 20:19:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:11,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:19:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:19:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 20:19:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 20:19:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:19:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:19:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 20:19:11,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245023074] [2021-12-06 20:19:11,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245023074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756254049] [2021-12-06 20:19:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:11,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:11,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:11,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:11,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:19:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:11,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:19:11,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 20:19:11,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:11,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756254049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:11,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:11,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 20:19:11,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846161977] [2021-12-06 20:19:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:11,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:11,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:11,622 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:11,643 INFO L93 Difference]: Finished difference Result 656 states and 1018 transitions. [2021-12-06 20:19:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2021-12-06 20:19:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:11,646 INFO L225 Difference]: With dead ends: 656 [2021-12-06 20:19:11,646 INFO L226 Difference]: Without dead ends: 379 [2021-12-06 20:19:11,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:11,649 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 134 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 906 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 [2021-12-06 20:19:11,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 906 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:19:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-06 20:19:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2021-12-06 20:19:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 291 states have (on average 1.5841924398625429) internal successors, (461), 293 states have internal predecessors, (461), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-06 20:19:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 580 transitions. [2021-12-06 20:19:11,668 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 580 transitions. Word has length 106 [2021-12-06 20:19:11,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:11,669 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 580 transitions. [2021-12-06 20:19:11,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 580 transitions. [2021-12-06 20:19:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 20:19:11,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:11,672 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] [2021-12-06 20:19:11,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:19:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:11,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:11,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash 82985518, now seen corresponding path program 1 times [2021-12-06 20:19:11,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:11,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098195872] [2021-12-06 20:19:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:11,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:19:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:19:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:19:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 20:19:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:19:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:19:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 20:19:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 20:19:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 20:19:12,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098195872] [2021-12-06 20:19:12,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098195872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395951376] [2021-12-06 20:19:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:12,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:12,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:12,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:12,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:19:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:19:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 20:19:12,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:12,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395951376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:12,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:12,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 20:19:12,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996274752] [2021-12-06 20:19:12,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:19:12,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:19:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:12,390 INFO L87 Difference]: Start difference. First operand 371 states and 580 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:12,442 INFO L93 Difference]: Finished difference Result 733 states and 1150 transitions. [2021-12-06 20:19:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:19:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2021-12-06 20:19:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:12,445 INFO L225 Difference]: With dead ends: 733 [2021-12-06 20:19:12,445 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 20:19:12,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:12,448 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 152 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1634 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 [2021-12-06 20:19:12,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1634 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:19:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 20:19:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-06 20:19:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.582191780821918) internal successors, (462), 295 states have internal predecessors, (462), 60 states have call successors, (60), 19 states have call predecessors, (60), 20 states have return successors, (61), 58 states have call predecessors, (61), 59 states have call successors, (61) [2021-12-06 20:19:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 583 transitions. [2021-12-06 20:19:12,467 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 583 transitions. Word has length 107 [2021-12-06 20:19:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:12,467 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 583 transitions. [2021-12-06 20:19:12,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 583 transitions. [2021-12-06 20:19:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 20:19:12,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:12,470 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] [2021-12-06 20:19:12,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 20:19:12,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:12,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -201150452, now seen corresponding path program 1 times [2021-12-06 20:19:12,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:12,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640006451] [2021-12-06 20:19:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:12,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:19:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:19:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 20:19:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:19:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 20:19:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 20:19:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:19:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 20:19:12,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:12,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640006451] [2021-12-06 20:19:12,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640006451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:12,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622451138] [2021-12-06 20:19:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:12,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:12,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:12,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:12,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:19:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:19:13,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 20:19:13,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:13,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622451138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:13,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:13,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 20:19:13,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534288227] [2021-12-06 20:19:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:13,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:19:13,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:19:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:19:13,154 INFO L87 Difference]: Start difference. First operand 373 states and 583 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:13,203 INFO L93 Difference]: Finished difference Result 735 states and 1155 transitions. [2021-12-06 20:19:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:19:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2021-12-06 20:19:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:13,206 INFO L225 Difference]: With dead ends: 735 [2021-12-06 20:19:13,206 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 20:19:13,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:19:13,208 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 151 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1623 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 [2021-12-06 20:19:13,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1623 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:19:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 20:19:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-06 20:19:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.5802047781569966) internal successors, (463), 297 states have internal predecessors, (463), 60 states have call successors, (60), 19 states have call predecessors, (60), 21 states have return successors, (66), 58 states have call predecessors, (66), 59 states have call successors, (66) [2021-12-06 20:19:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 589 transitions. [2021-12-06 20:19:13,225 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 589 transitions. Word has length 108 [2021-12-06 20:19:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:13,225 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 589 transitions. [2021-12-06 20:19:13,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 589 transitions. [2021-12-06 20:19:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 20:19:13,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:13,228 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] [2021-12-06 20:19:13,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:19:13,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:13,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1014394431, now seen corresponding path program 1 times [2021-12-06 20:19:13,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994453729] [2021-12-06 20:19:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:13,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:19:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 20:19:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:19:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:19:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:19:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:19:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:19:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 20:19:13,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994453729] [2021-12-06 20:19:13,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994453729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:13,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:13,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:19:13,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761933863] [2021-12-06 20:19:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:13,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:19:13,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:19:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:13,534 INFO L87 Difference]: Start difference. First operand 375 states and 589 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:14,466 INFO L93 Difference]: Finished difference Result 812 states and 1299 transitions. [2021-12-06 20:19:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:19:14,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2021-12-06 20:19:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:14,470 INFO L225 Difference]: With dead ends: 812 [2021-12-06 20:19:14,470 INFO L226 Difference]: Without dead ends: 460 [2021-12-06 20:19:14,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:19:14,472 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 1041 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:14,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 1628 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:19:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-12-06 20:19:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 375. [2021-12-06 20:19:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.5802047781569966) internal successors, (463), 297 states have internal predecessors, (463), 60 states have call successors, (60), 19 states have call predecessors, (60), 21 states have return successors, (65), 58 states have call predecessors, (65), 59 states have call successors, (65) [2021-12-06 20:19:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 588 transitions. [2021-12-06 20:19:14,504 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 588 transitions. Word has length 109 [2021-12-06 20:19:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:14,504 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 588 transitions. [2021-12-06 20:19:14,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 588 transitions. [2021-12-06 20:19:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 20:19:14,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:14,507 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] [2021-12-06 20:19:14,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:19:14,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash 33364413, now seen corresponding path program 2 times [2021-12-06 20:19:14,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494626416] [2021-12-06 20:19:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:14,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:19:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:19:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:19:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 20:19:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 20:19:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:19:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 20:19:14,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494626416] [2021-12-06 20:19:14,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494626416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:14,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:14,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:19:14,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488063883] [2021-12-06 20:19:14,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:14,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:19:14,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:14,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:19:14,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:14,607 INFO L87 Difference]: Start difference. First operand 375 states and 588 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:15,505 INFO L93 Difference]: Finished difference Result 814 states and 1302 transitions. [2021-12-06 20:19:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:19:15,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2021-12-06 20:19:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:15,510 INFO L225 Difference]: With dead ends: 814 [2021-12-06 20:19:15,510 INFO L226 Difference]: Without dead ends: 462 [2021-12-06 20:19:15,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:19:15,513 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 1039 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:15,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1635 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:19:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-06 20:19:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 377. [2021-12-06 20:19:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5782312925170068) internal successors, (464), 299 states have internal predecessors, (464), 60 states have call successors, (60), 19 states have call predecessors, (60), 22 states have return successors, (67), 58 states have call predecessors, (67), 59 states have call successors, (67) [2021-12-06 20:19:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 591 transitions. [2021-12-06 20:19:15,546 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 591 transitions. Word has length 110 [2021-12-06 20:19:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 591 transitions. [2021-12-06 20:19:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:19:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 591 transitions. [2021-12-06 20:19:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 20:19:15,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:15,548 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] [2021-12-06 20:19:15,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:19:15,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1805555962, now seen corresponding path program 1 times [2021-12-06 20:19:15,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248490602] [2021-12-06 20:19:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:15,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 20:19:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:19:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 20:19:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 20:19:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:19:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 20:19:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 20:19:15,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:15,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248490602] [2021-12-06 20:19:15,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248490602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:15,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:15,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:19:15,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390171625] [2021-12-06 20:19:15,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:15,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:15,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:15,656 INFO L87 Difference]: Start difference. First operand 377 states and 591 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:19:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:16,728 INFO L93 Difference]: Finished difference Result 812 states and 1297 transitions. [2021-12-06 20:19:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:19:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 111 [2021-12-06 20:19:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:16,732 INFO L225 Difference]: With dead ends: 812 [2021-12-06 20:19:16,732 INFO L226 Difference]: Without dead ends: 462 [2021-12-06 20:19:16,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 20:19:16,735 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1187 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:16,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 2122 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:19:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-06 20:19:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 377. [2021-12-06 20:19:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5782312925170068) internal successors, (464), 299 states have internal predecessors, (464), 60 states have call successors, (60), 19 states have call predecessors, (60), 22 states have return successors, (66), 58 states have call predecessors, (66), 59 states have call successors, (66) [2021-12-06 20:19:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 590 transitions. [2021-12-06 20:19:16,764 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 590 transitions. Word has length 111 [2021-12-06 20:19:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:16,764 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 590 transitions. [2021-12-06 20:19:16,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:19:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 590 transitions. [2021-12-06 20:19:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 20:19:16,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:16,768 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] [2021-12-06 20:19:16,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:19:16,768 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1028005593, now seen corresponding path program 2 times [2021-12-06 20:19:16,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100570914] [2021-12-06 20:19:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:16,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 20:19:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:19:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:19:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 20:19:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 20:19:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 20:19:16,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:16,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100570914] [2021-12-06 20:19:16,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100570914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:16,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:16,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:19:16,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513692833] [2021-12-06 20:19:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:16,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:16,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:16,872 INFO L87 Difference]: Start difference. First operand 377 states and 590 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:19:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:17,840 INFO L93 Difference]: Finished difference Result 814 states and 1303 transitions. [2021-12-06 20:19:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:19:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2021-12-06 20:19:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:17,843 INFO L225 Difference]: With dead ends: 814 [2021-12-06 20:19:17,843 INFO L226 Difference]: Without dead ends: 464 [2021-12-06 20:19:17,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 20:19:17,845 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1219 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:17,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2082 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:19:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-06 20:19:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 379. [2021-12-06 20:19:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 295 states have (on average 1.576271186440678) internal successors, (465), 301 states have internal predecessors, (465), 60 states have call successors, (60), 19 states have call predecessors, (60), 23 states have return successors, (71), 58 states have call predecessors, (71), 59 states have call successors, (71) [2021-12-06 20:19:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 596 transitions. [2021-12-06 20:19:17,864 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 596 transitions. Word has length 112 [2021-12-06 20:19:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 596 transitions. [2021-12-06 20:19:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:19:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 596 transitions. [2021-12-06 20:19:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 20:19:17,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:17,867 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] [2021-12-06 20:19:17,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:19:17,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 369653931, now seen corresponding path program 1 times [2021-12-06 20:19:17,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:17,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257405655] [2021-12-06 20:19:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:17,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:19:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:19:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:19:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 20:19:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 20:19:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 20:19:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 20:19:17,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:17,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257405655] [2021-12-06 20:19:17,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257405655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:17,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837930189] [2021-12-06 20:19:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:17,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:17,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:17,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:19:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:19:18,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:18,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:18,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837930189] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:18,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:18,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 20:19:18,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93351244] [2021-12-06 20:19:18,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:18,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:19:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:19:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:19:18,344 INFO L87 Difference]: Start difference. First operand 379 states and 596 transitions. Second operand has 15 states, 14 states have (on average 9.0) internal successors, (126), 11 states have internal predecessors, (126), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 20:19:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:20,006 INFO L93 Difference]: Finished difference Result 1673 states and 2861 transitions. [2021-12-06 20:19:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:19:20,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.0) internal successors, (126), 11 states have internal predecessors, (126), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 113 [2021-12-06 20:19:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:20,013 INFO L225 Difference]: With dead ends: 1673 [2021-12-06 20:19:20,013 INFO L226 Difference]: Without dead ends: 1325 [2021-12-06 20:19:20,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:19:20,015 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 3257 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:20,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3259 Valid, 4223 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 3751 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 20:19:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-12-06 20:19:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 797. [2021-12-06 20:19:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 634 states have (on average 1.6261829652996846) internal successors, (1031), 640 states have internal predecessors, (1031), 139 states have call successors, (139), 19 states have call predecessors, (139), 23 states have return successors, (160), 137 states have call predecessors, (160), 138 states have call successors, (160) [2021-12-06 20:19:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1330 transitions. [2021-12-06 20:19:20,063 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1330 transitions. Word has length 113 [2021-12-06 20:19:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:20,063 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1330 transitions. [2021-12-06 20:19:20,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.0) internal successors, (126), 11 states have internal predecessors, (126), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 20:19:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1330 transitions. [2021-12-06 20:19:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 20:19:20,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:20,067 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] [2021-12-06 20:19:20,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:19:20,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:20,268 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1999129128, now seen corresponding path program 1 times [2021-12-06 20:19:20,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:20,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344311881] [2021-12-06 20:19:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:20,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:19:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:19:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:19:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 20:19:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 20:19:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 20:19:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:20,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:20,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344311881] [2021-12-06 20:19:20,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344311881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:20,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:20,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:20,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44530546] [2021-12-06 20:19:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:20,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:20,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:20,419 INFO L87 Difference]: Start difference. First operand 797 states and 1330 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:21,116 INFO L93 Difference]: Finished difference Result 1999 states and 3429 transitions. [2021-12-06 20:19:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:21,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2021-12-06 20:19:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:21,124 INFO L225 Difference]: With dead ends: 1999 [2021-12-06 20:19:21,124 INFO L226 Difference]: Without dead ends: 1280 [2021-12-06 20:19:21,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:21,127 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 1099 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:21,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 1342 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-12-06 20:19:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1187. [2021-12-06 20:19:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 945 states have (on average 1.6412698412698412) internal successors, (1551), 951 states have internal predecessors, (1551), 218 states have call successors, (218), 19 states have call predecessors, (218), 23 states have return successors, (249), 216 states have call predecessors, (249), 217 states have call successors, (249) [2021-12-06 20:19:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2018 transitions. [2021-12-06 20:19:21,210 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2018 transitions. Word has length 116 [2021-12-06 20:19:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:21,210 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2018 transitions. [2021-12-06 20:19:21,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2018 transitions. [2021-12-06 20:19:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 20:19:21,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:21,216 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] [2021-12-06 20:19:21,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:19:21,216 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1684265169, now seen corresponding path program 1 times [2021-12-06 20:19:21,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:21,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710341609] [2021-12-06 20:19:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:21,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:19:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 20:19:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:19:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:21,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710341609] [2021-12-06 20:19:21,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710341609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:21,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:21,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:21,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360495103] [2021-12-06 20:19:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:21,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:21,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:21,288 INFO L87 Difference]: Start difference. First operand 1187 states and 2018 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:21,934 INFO L93 Difference]: Finished difference Result 2973 states and 5138 transitions. [2021-12-06 20:19:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:21,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2021-12-06 20:19:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:21,944 INFO L225 Difference]: With dead ends: 2973 [2021-12-06 20:19:21,944 INFO L226 Difference]: Without dead ends: 1917 [2021-12-06 20:19:21,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:21,947 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 1032 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:21,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1357 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:19:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-12-06 20:19:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1824. [2021-12-06 20:19:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1463 states have (on average 1.6466165413533835) internal successors, (2409), 1469 states have internal predecessors, (2409), 337 states have call successors, (337), 19 states have call predecessors, (337), 23 states have return successors, (368), 335 states have call predecessors, (368), 336 states have call successors, (368) [2021-12-06 20:19:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 3114 transitions. [2021-12-06 20:19:22,051 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 3114 transitions. Word has length 117 [2021-12-06 20:19:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:22,051 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 3114 transitions. [2021-12-06 20:19:22,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 3114 transitions. [2021-12-06 20:19:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 20:19:22,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:22,058 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] [2021-12-06 20:19:22,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:19:22,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1668055978, now seen corresponding path program 1 times [2021-12-06 20:19:22,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:22,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79435617] [2021-12-06 20:19:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:22,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:19:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:19:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:19:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 20:19:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 20:19:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 20:19:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:22,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:22,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79435617] [2021-12-06 20:19:22,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79435617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:22,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:22,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:22,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080451516] [2021-12-06 20:19:22,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:22,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:22,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:22,128 INFO L87 Difference]: Start difference. First operand 1824 states and 3114 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:22,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:22,849 INFO L93 Difference]: Finished difference Result 4453 states and 7749 transitions. [2021-12-06 20:19:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:22,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-06 20:19:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:22,864 INFO L225 Difference]: With dead ends: 4453 [2021-12-06 20:19:22,864 INFO L226 Difference]: Without dead ends: 2895 [2021-12-06 20:19:22,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:22,868 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 1008 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:22,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1370 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2021-12-06 20:19:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2802. [2021-12-06 20:19:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2279 states have (on average 1.6511627906976745) internal successors, (3763), 2285 states have internal predecessors, (3763), 499 states have call successors, (499), 19 states have call predecessors, (499), 23 states have return successors, (546), 497 states have call predecessors, (546), 498 states have call successors, (546) [2021-12-06 20:19:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4808 transitions. [2021-12-06 20:19:23,007 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4808 transitions. Word has length 118 [2021-12-06 20:19:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:23,007 INFO L470 AbstractCegarLoop]: Abstraction has 2802 states and 4808 transitions. [2021-12-06 20:19:23,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4808 transitions. [2021-12-06 20:19:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 20:19:23,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:23,014 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] [2021-12-06 20:19:23,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:19:23,015 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -75332658, now seen corresponding path program 1 times [2021-12-06 20:19:23,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:23,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747030320] [2021-12-06 20:19:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:23,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:19:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:19:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 20:19:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 20:19:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:19:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:19:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:23,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747030320] [2021-12-06 20:19:23,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747030320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:23,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:23,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:23,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594523082] [2021-12-06 20:19:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:23,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:23,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:23,085 INFO L87 Difference]: Start difference. First operand 2802 states and 4808 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:23,860 INFO L93 Difference]: Finished difference Result 6792 states and 11884 transitions. [2021-12-06 20:19:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:23,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-06 20:19:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:23,882 INFO L225 Difference]: With dead ends: 6792 [2021-12-06 20:19:23,882 INFO L226 Difference]: Without dead ends: 4475 [2021-12-06 20:19:23,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:23,888 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 1019 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:23,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 1353 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-12-06 20:19:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4382. [2021-12-06 20:19:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 3614 states have (on average 1.6543995572772552) internal successors, (5979), 3620 states have internal predecessors, (5979), 744 states have call successors, (744), 19 states have call predecessors, (744), 23 states have return successors, (817), 742 states have call predecessors, (817), 743 states have call successors, (817) [2021-12-06 20:19:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 7540 transitions. [2021-12-06 20:19:24,098 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 7540 transitions. Word has length 119 [2021-12-06 20:19:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:24,099 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 7540 transitions. [2021-12-06 20:19:24,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 7540 transitions. [2021-12-06 20:19:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 20:19:24,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:24,106 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] [2021-12-06 20:19:24,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:19:24,107 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1869318002, now seen corresponding path program 1 times [2021-12-06 20:19:24,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:24,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657207277] [2021-12-06 20:19:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:24,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:19:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 20:19:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:19:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 20:19:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:19:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:19:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:24,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657207277] [2021-12-06 20:19:24,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657207277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:24,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:24,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:24,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808645700] [2021-12-06 20:19:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:24,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:24,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:24,180 INFO L87 Difference]: Start difference. First operand 4382 states and 7540 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:25,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:25,110 INFO L93 Difference]: Finished difference Result 10963 states and 19213 transitions. [2021-12-06 20:19:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:25,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2021-12-06 20:19:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:25,148 INFO L225 Difference]: With dead ends: 10963 [2021-12-06 20:19:25,148 INFO L226 Difference]: Without dead ends: 7318 [2021-12-06 20:19:25,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:25,156 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 1059 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:25,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 1404 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-12-06 20:19:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 7225. [2021-12-06 20:19:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7225 states, 5964 states have (on average 1.6495640509725016) internal successors, (9838), 5970 states have internal predecessors, (9838), 1237 states have call successors, (1237), 19 states have call predecessors, (1237), 23 states have return successors, (1354), 1235 states have call predecessors, (1354), 1236 states have call successors, (1354) [2021-12-06 20:19:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7225 states to 7225 states and 12429 transitions. [2021-12-06 20:19:25,493 INFO L78 Accepts]: Start accepts. Automaton has 7225 states and 12429 transitions. Word has length 120 [2021-12-06 20:19:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:25,493 INFO L470 AbstractCegarLoop]: Abstraction has 7225 states and 12429 transitions. [2021-12-06 20:19:25,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7225 states and 12429 transitions. [2021-12-06 20:19:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 20:19:25,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:25,504 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] [2021-12-06 20:19:25,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:19:25,504 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1071149334, now seen corresponding path program 1 times [2021-12-06 20:19:25,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:25,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858286385] [2021-12-06 20:19:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:25,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:19:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:19:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 20:19:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 20:19:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:19:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 20:19:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:25,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:25,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858286385] [2021-12-06 20:19:25,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858286385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:25,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:25,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:25,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246396218] [2021-12-06 20:19:25,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:25,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:25,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:25,603 INFO L87 Difference]: Start difference. First operand 7225 states and 12429 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:26,679 INFO L93 Difference]: Finished difference Result 18383 states and 32177 transitions. [2021-12-06 20:19:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:26,680 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-06 20:19:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:26,717 INFO L225 Difference]: With dead ends: 18383 [2021-12-06 20:19:26,717 INFO L226 Difference]: Without dead ends: 12297 [2021-12-06 20:19:26,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:26,732 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1074 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:26,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 1339 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12297 states. [2021-12-06 20:19:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12297 to 12204. [2021-12-06 20:19:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12204 states, 10121 states have (on average 1.6489477324375061) internal successors, (16689), 10127 states have internal predecessors, (16689), 2059 states have call successors, (2059), 19 states have call predecessors, (2059), 23 states have return successors, (2254), 2057 states have call predecessors, (2254), 2058 states have call successors, (2254) [2021-12-06 20:19:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12204 states to 12204 states and 21002 transitions. [2021-12-06 20:19:27,312 INFO L78 Accepts]: Start accepts. Automaton has 12204 states and 21002 transitions. Word has length 121 [2021-12-06 20:19:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:27,313 INFO L470 AbstractCegarLoop]: Abstraction has 12204 states and 21002 transitions. [2021-12-06 20:19:27,313 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12204 states and 21002 transitions. [2021-12-06 20:19:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 20:19:27,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:27,326 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] [2021-12-06 20:19:27,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:19:27,326 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1919234284, now seen corresponding path program 1 times [2021-12-06 20:19:27,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:27,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019125096] [2021-12-06 20:19:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:27,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 20:19:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:19:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 20:19:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 20:19:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 20:19:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 20:19:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:27,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:27,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019125096] [2021-12-06 20:19:27,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019125096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:27,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:27,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:27,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573915552] [2021-12-06 20:19:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:27,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:27,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:27,396 INFO L87 Difference]: Start difference. First operand 12204 states and 21002 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:28,804 INFO L93 Difference]: Finished difference Result 29341 states and 51037 transitions. [2021-12-06 20:19:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:28,804 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2021-12-06 20:19:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:28,856 INFO L225 Difference]: With dead ends: 29341 [2021-12-06 20:19:28,856 INFO L226 Difference]: Without dead ends: 19250 [2021-12-06 20:19:28,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:28,878 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 1013 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:28,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1347 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19250 states. [2021-12-06 20:19:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19250 to 19157. [2021-12-06 20:19:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19157 states, 15871 states have (on average 1.6230231239367399) internal successors, (25759), 15877 states have internal predecessors, (25759), 3262 states have call successors, (3262), 19 states have call predecessors, (3262), 23 states have return successors, (3601), 3260 states have call predecessors, (3601), 3261 states have call successors, (3601) [2021-12-06 20:19:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19157 states to 19157 states and 32622 transitions. [2021-12-06 20:19:29,825 INFO L78 Accepts]: Start accepts. Automaton has 19157 states and 32622 transitions. Word has length 122 [2021-12-06 20:19:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:29,825 INFO L470 AbstractCegarLoop]: Abstraction has 19157 states and 32622 transitions. [2021-12-06 20:19:29,825 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 19157 states and 32622 transitions. [2021-12-06 20:19:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 20:19:29,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:29,842 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] [2021-12-06 20:19:29,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:19:29,842 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 427103209, now seen corresponding path program 1 times [2021-12-06 20:19:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531642855] [2021-12-06 20:19:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:29,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:19:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 20:19:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:19:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 20:19:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 20:19:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:29,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:29,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531642855] [2021-12-06 20:19:29,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531642855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:29,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:29,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:29,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564432348] [2021-12-06 20:19:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:29,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:29,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:29,923 INFO L87 Difference]: Start difference. First operand 19157 states and 32622 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:31,893 INFO L93 Difference]: Finished difference Result 50773 states and 87955 transitions. [2021-12-06 20:19:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:31,893 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2021-12-06 20:19:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:32,005 INFO L225 Difference]: With dead ends: 50773 [2021-12-06 20:19:32,005 INFO L226 Difference]: Without dead ends: 34371 [2021-12-06 20:19:32,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:32,033 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 1012 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:32,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1376 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34371 states. [2021-12-06 20:19:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34371 to 34278. [2021-12-06 20:19:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34278 states, 28542 states have (on average 1.619543129423306) internal successors, (46225), 28548 states have internal predecessors, (46225), 5712 states have call successors, (5712), 19 states have call predecessors, (5712), 23 states have return successors, (6325), 5710 states have call predecessors, (6325), 5711 states have call successors, (6325) [2021-12-06 20:19:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34278 states to 34278 states and 58262 transitions. [2021-12-06 20:19:33,854 INFO L78 Accepts]: Start accepts. Automaton has 34278 states and 58262 transitions. Word has length 123 [2021-12-06 20:19:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:33,854 INFO L470 AbstractCegarLoop]: Abstraction has 34278 states and 58262 transitions. [2021-12-06 20:19:33,854 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 34278 states and 58262 transitions. [2021-12-06 20:19:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 20:19:33,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:33,870 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] [2021-12-06 20:19:33,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:19:33,870 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1625053902, now seen corresponding path program 1 times [2021-12-06 20:19:33,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961980816] [2021-12-06 20:19:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:33,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:19:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:19:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 20:19:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 20:19:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 20:19:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 20:19:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:33,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961980816] [2021-12-06 20:19:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961980816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:33,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:33,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:33,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342499960] [2021-12-06 20:19:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:33,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:33,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:33,935 INFO L87 Difference]: Start difference. First operand 34278 states and 58262 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:36,860 INFO L93 Difference]: Finished difference Result 93645 states and 161354 transitions. [2021-12-06 20:19:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:36,860 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2021-12-06 20:19:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:37,088 INFO L225 Difference]: With dead ends: 93645 [2021-12-06 20:19:37,088 INFO L226 Difference]: Without dead ends: 63038 [2021-12-06 20:19:37,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:37,152 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 996 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:37,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 1378 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:19:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63038 states. [2021-12-06 20:19:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63038 to 62945. [2021-12-06 20:19:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62945 states, 52696 states have (on average 1.6151131015636861) internal successors, (85110), 52702 states have internal predecessors, (85110), 10225 states have call successors, (10225), 19 states have call predecessors, (10225), 23 states have return successors, (11370), 10223 states have call predecessors, (11370), 10224 states have call successors, (11370) [2021-12-06 20:19:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62945 states to 62945 states and 106705 transitions. [2021-12-06 20:19:40,491 INFO L78 Accepts]: Start accepts. Automaton has 62945 states and 106705 transitions. Word has length 124 [2021-12-06 20:19:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:40,492 INFO L470 AbstractCegarLoop]: Abstraction has 62945 states and 106705 transitions. [2021-12-06 20:19:40,492 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 62945 states and 106705 transitions. [2021-12-06 20:19:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 20:19:40,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:40,508 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] [2021-12-06 20:19:40,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:19:40,508 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1369288023, now seen corresponding path program 1 times [2021-12-06 20:19:40,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:40,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912463443] [2021-12-06 20:19:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:40,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 20:19:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:19:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:19:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 20:19:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 20:19:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:40,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:40,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912463443] [2021-12-06 20:19:40,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912463443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:40,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:40,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649708406] [2021-12-06 20:19:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:40,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:40,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:40,594 INFO L87 Difference]: Start difference. First operand 62945 states and 106705 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:45,767 INFO L93 Difference]: Finished difference Result 118021 states and 203731 transitions. [2021-12-06 20:19:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:45,768 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2021-12-06 20:19:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:46,165 INFO L225 Difference]: With dead ends: 118021 [2021-12-06 20:19:46,165 INFO L226 Difference]: Without dead ends: 117911 [2021-12-06 20:19:46,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:19:46,213 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1007 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:46,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1380 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:19:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117911 states. [2021-12-06 20:19:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117911 to 117818. [2021-12-06 20:19:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117818 states, 99201 states have (on average 1.609641031844437) internal successors, (159678), 99207 states have internal predecessors, (159678), 18593 states have call successors, (18593), 19 states have call predecessors, (18593), 23 states have return successors, (20784), 18591 states have call predecessors, (20784), 18592 states have call successors, (20784) [2021-12-06 20:19:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117818 states to 117818 states and 199055 transitions. [2021-12-06 20:19:52,073 INFO L78 Accepts]: Start accepts. Automaton has 117818 states and 199055 transitions. Word has length 125 [2021-12-06 20:19:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:52,073 INFO L470 AbstractCegarLoop]: Abstraction has 117818 states and 199055 transitions. [2021-12-06 20:19:52,073 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:19:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 117818 states and 199055 transitions. [2021-12-06 20:19:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 20:19:52,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:52,092 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] [2021-12-06 20:19:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:19:52,092 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1554603955, now seen corresponding path program 1 times [2021-12-06 20:19:52,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:52,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444691208] [2021-12-06 20:19:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:52,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:19:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:19:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:19:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:19:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:19:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:19:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:19:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 20:19:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 20:19:52,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:52,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444691208] [2021-12-06 20:19:52,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444691208] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:52,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879257045] [2021-12-06 20:19:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:52,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:52,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:52,258 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:52,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:19:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:52,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 20:19:52,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:19:52,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:19:52,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879257045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:52,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:52,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2021-12-06 20:19:52,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752509180] [2021-12-06 20:19:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:52,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:52,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-12-06 20:19:52,600 INFO L87 Difference]: Start difference. First operand 117818 states and 199055 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 20:19:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:57,380 INFO L93 Difference]: Finished difference Result 118116 states and 199470 transitions. [2021-12-06 20:19:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:19:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 126 [2021-12-06 20:19:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:57,793 INFO L225 Difference]: With dead ends: 118116 [2021-12-06 20:19:57,793 INFO L226 Difference]: Without dead ends: 118012 [2021-12-06 20:19:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 20:19:57,838 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 716 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 4493 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118012 states. [2021-12-06 20:20:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118012 to 117957. [2021-12-06 20:20:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117957 states, 99307 states have (on average 1.6094031639260071) internal successors, (159825), 99315 states have internal predecessors, (159825), 18612 states have call successors, (18612), 30 states have call predecessors, (18612), 37 states have return successors, (20816), 18611 states have call predecessors, (20816), 18610 states have call successors, (20816) [2021-12-06 20:20:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117957 states to 117957 states and 199253 transitions. [2021-12-06 20:20:04,068 INFO L78 Accepts]: Start accepts. Automaton has 117957 states and 199253 transitions. Word has length 126 [2021-12-06 20:20:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 117957 states and 199253 transitions. [2021-12-06 20:20:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 20:20:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 117957 states and 199253 transitions. [2021-12-06 20:20:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 20:20:04,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:04,089 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] [2021-12-06 20:20:04,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 20:20:04,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f865b3-fe1d-4b38-8733-bcdc8f01e429/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:20:04,291 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1949186296, now seen corresponding path program 1 times [2021-12-06 20:20:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:04,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575861705] [2021-12-06 20:20:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:04,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:20:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:20:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:20:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:20:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:20:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:20:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:20:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:20:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 20:20:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:20:04,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:04,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575861705] [2021-12-06 20:20:04,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575861705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:04,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:04,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:20:04,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106597811] [2021-12-06 20:20:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:04,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:20:04,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:20:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:20:04,399 INFO L87 Difference]: Start difference. First operand 117957 states and 199253 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:20:14,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:14,413 INFO L93 Difference]: Finished difference Result 231763 states and 398211 transitions. [2021-12-06 20:20:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:20:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2021-12-06 20:20:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:15,189 INFO L225 Difference]: With dead ends: 231763 [2021-12-06 20:20:15,189 INFO L226 Difference]: Without dead ends: 231535 [2021-12-06 20:20:15,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:20:15,263 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 2279 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:15,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2297 Valid, 1922 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 20:20:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231535 states. [2021-12-06 20:20:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231535 to 231157. [2021-12-06 20:20:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231157 states, 194647 states have (on average 1.6106438835430292) internal successors, (313507), 194662 states have internal predecessors, (313507), 36435 states have call successors, (36435), 57 states have call predecessors, (36435), 74 states have return successors, (38679), 36437 states have call predecessors, (38679), 36431 states have call successors, (38679) [2021-12-06 20:20:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231157 states to 231157 states and 388621 transitions. [2021-12-06 20:20:27,332 INFO L78 Accepts]: Start accepts. Automaton has 231157 states and 388621 transitions. Word has length 127 [2021-12-06 20:20:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:27,332 INFO L470 AbstractCegarLoop]: Abstraction has 231157 states and 388621 transitions. [2021-12-06 20:20:27,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:20:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 231157 states and 388621 transitions. [2021-12-06 20:20:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 20:20:27,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:27,365 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] [2021-12-06 20:20:27,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 20:20:27,365 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 485115212, now seen corresponding path program 1 times [2021-12-06 20:20:27,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:27,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162195270] [2021-12-06 20:20:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:27,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:20:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:20:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:20:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:20:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:20:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:20:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:20:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:20:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 20:20:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:20:27,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162195270] [2021-12-06 20:20:27,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162195270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:27,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:27,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 20:20:27,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773067855] [2021-12-06 20:20:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:27,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:20:27,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:20:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:20:27,481 INFO L87 Difference]: Start difference. First operand 231157 states and 388621 transitions. Second operand has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 20:20:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:38,229 INFO L93 Difference]: Finished difference Result 232429 states and 397182 transitions. [2021-12-06 20:20:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 20:20:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 127 [2021-12-06 20:20:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:39,020 INFO L225 Difference]: With dead ends: 232429 [2021-12-06 20:20:39,020 INFO L226 Difference]: Without dead ends: 231907 [2021-12-06 20:20:39,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 20:20:39,111 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 1270 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:39,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3574 Invalid, 4598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 3919 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 20:20:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231907 states. [2021-12-06 20:20:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231907 to 231377. [2021-12-06 20:20:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231377 states, 194801 states have (on average 1.6103356758948877) internal successors, (313695), 194822 states have internal predecessors, (313695), 36491 states have call successors, (36491), 65 states have call predecessors, (36491), 84 states have return successors, (38749), 36489 states have call predecessors, (38749), 36479 states have call successors, (38749) [2021-12-06 20:20:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231377 states to 231377 states and 388935 transitions. [2021-12-06 20:20:51,217 INFO L78 Accepts]: Start accepts. Automaton has 231377 states and 388935 transitions. Word has length 127 [2021-12-06 20:20:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:51,217 INFO L470 AbstractCegarLoop]: Abstraction has 231377 states and 388935 transitions. [2021-12-06 20:20:51,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 20:20:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 231377 states and 388935 transitions. [2021-12-06 20:20:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 20:20:51,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:51,248 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] [2021-12-06 20:20:51,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 20:20:51,248 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 123423989, now seen corresponding path program 1 times [2021-12-06 20:20:51,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:51,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192691443] [2021-12-06 20:20:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:51,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:20:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:20:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:20:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:20:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:20:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 20:20:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:20:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 20:20:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 20:20:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:20:51,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:51,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192691443] [2021-12-06 20:20:51,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192691443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:51,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:51,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:20:51,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994951838] [2021-12-06 20:20:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:51,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:20:51,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:20:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:20:51,321 INFO L87 Difference]: Start difference. First operand 231377 states and 388935 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:21:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:00,842 INFO L93 Difference]: Finished difference Result 232181 states and 396600 transitions. [2021-12-06 20:21:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:21:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2021-12-06 20:21:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:01,624 INFO L225 Difference]: With dead ends: 232181 [2021-12-06 20:21:01,624 INFO L226 Difference]: Without dead ends: 231823 [2021-12-06 20:21:01,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:21:01,709 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 918 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:01,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 1805 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:21:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231823 states. [2021-12-06 20:21:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231823 to 231321. [2021-12-06 20:21:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231321 states, 194769 states have (on average 1.610425683758709) internal successors, (313661), 194788 states have internal predecessors, (313661), 36471 states have call successors, (36471), 63 states have call predecessors, (36471), 80 states have return successors, (38705), 36469 states have call predecessors, (38705), 36459 states have call successors, (38705) [2021-12-06 20:21:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231321 states to 231321 states and 388837 transitions. [2021-12-06 20:21:14,035 INFO L78 Accepts]: Start accepts. Automaton has 231321 states and 388837 transitions. Word has length 127 [2021-12-06 20:21:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:14,036 INFO L470 AbstractCegarLoop]: Abstraction has 231321 states and 388837 transitions. [2021-12-06 20:21:14,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:21:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 231321 states and 388837 transitions. [2021-12-06 20:21:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 20:21:14,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:14,068 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] [2021-12-06 20:21:14,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 20:21:14,069 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:14,069 INFO L85 PathProgramCache]: Analyzing trace with hash 119898094, now seen corresponding path program 1 times [2021-12-06 20:21:14,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:14,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153096212] [2021-12-06 20:21:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:14,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:21:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:21:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:21:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:21:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:21:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:21:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:21:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:21:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:21:14,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:14,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153096212] [2021-12-06 20:21:14,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153096212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:14,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:14,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 20:21:14,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098847215] [2021-12-06 20:21:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:14,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:21:14,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:21:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:21:14,189 INFO L87 Difference]: Start difference. First operand 231321 states and 388837 transitions. Second operand has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 20:21:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:26,126 INFO L93 Difference]: Finished difference Result 232583 states and 397132 transitions. [2021-12-06 20:21:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-06 20:21:26,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 128 [2021-12-06 20:21:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:26,858 INFO L225 Difference]: With dead ends: 232583 [2021-12-06 20:21:26,858 INFO L226 Difference]: Without dead ends: 231949 [2021-12-06 20:21:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=3104, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 20:21:26,926 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 1947 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 5581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:26,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 3095 Invalid, 5581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 20:21:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231949 states. [2021-12-06 20:21:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231949 to 231282. [2021-12-06 20:21:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231282 states, 194738 states have (on average 1.6104612350953589) internal successors, (313618), 194756 states have internal predecessors, (313618), 36465 states have call successors, (36465), 63 states have call predecessors, (36465), 78 states have return successors, (38693), 36462 states have call predecessors, (38693), 36453 states have call successors, (38693) [2021-12-06 20:21:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231282 states to 231282 states and 388776 transitions. [2021-12-06 20:21:39,682 INFO L78 Accepts]: Start accepts. Automaton has 231282 states and 388776 transitions. Word has length 128 [2021-12-06 20:21:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:39,683 INFO L470 AbstractCegarLoop]: Abstraction has 231282 states and 388776 transitions. [2021-12-06 20:21:39,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 20:21:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 231282 states and 388776 transitions. [2021-12-06 20:21:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 20:21:39,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:39,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:39,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 20:21:39,737 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:39,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:39,737 INFO L85 PathProgramCache]: Analyzing trace with hash -397756785, now seen corresponding path program 1 times [2021-12-06 20:21:39,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:39,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914059336] [2021-12-06 20:21:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:39,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:21:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:21:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:21:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 20:21:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 20:21:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:21:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:21:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 20:21:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 20:21:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 20:21:39,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914059336] [2021-12-06 20:21:39,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914059336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:39,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:39,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:21:39,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332052459] [2021-12-06 20:21:39,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:39,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:21:39,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:39,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:21:39,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:21:39,837 INFO L87 Difference]: Start difference. First operand 231282 states and 388776 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 20:21:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:50,955 INFO L93 Difference]: Finished difference Result 231785 states and 395998 transitions. [2021-12-06 20:21:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:21:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 137 [2021-12-06 20:21:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:50,956 INFO L225 Difference]: With dead ends: 231785 [2021-12-06 20:21:50,956 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 20:21:51,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:21:51,242 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 1204 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:51,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 1924 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:21:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 20:21:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 20:21:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:21:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 20:21:51,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2021-12-06 20:21:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:51,268 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:21:51,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 20:21:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 20:21:51,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 20:21:51,270 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 20:21:51,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 20:21:51,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.