./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 00530584ceb95509e59a4223c6066e974815f5b40475a70fc9a47cceec3e0b2f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:36:55,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:36:55,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:36:55,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:36:55,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:36:55,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:36:55,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:36:55,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:36:55,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:36:55,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:36:55,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:36:55,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:36:55,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:36:55,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:36:55,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:36:55,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:36:55,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:36:55,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:36:55,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:36:55,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:36:55,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:36:55,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:36:55,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:36:55,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:36:55,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:36:55,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:36:55,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:36:55,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:36:55,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:36:55,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:36:55,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:36:55,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:36:55,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:36:55,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:36:55,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:36:55,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:36:55,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:36:55,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:36:55,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:36:55,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:36:55,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:36:55,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:36:56,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:36:56,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:36:56,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:36:56,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:36:56,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:36:56,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:36:56,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:36:56,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:36:56,027 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:36:56,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:36:56,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:36:56,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:36:56,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:36:56,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:36:56,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:36:56,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:36:56,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:36:56,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:36:56,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:36:56,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:36:56,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:36:56,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:36:56,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:36:56,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:36:56,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:36:56,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:36:56,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:36:56,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:36:56,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:36:56,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:36:56,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:36:56,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:36:56,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:36:56,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:36:56,036 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_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00530584ceb95509e59a4223c6066e974815f5b40475a70fc9a47cceec3e0b2f [2021-11-20 07:36:56,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:36:56,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:36:56,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:36:56,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:36:56,382 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:36:56,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/email_spec11_product27.cil.c [2021-11-20 07:36:56,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/data/a77729dc3/416accbeec184970a0b53acbbdb4e930/FLAG2951d147d [2021-11-20 07:36:57,153 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:36:57,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c [2021-11-20 07:36:57,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/data/a77729dc3/416accbeec184970a0b53acbbdb4e930/FLAG2951d147d [2021-11-20 07:36:57,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/data/a77729dc3/416accbeec184970a0b53acbbdb4e930 [2021-11-20 07:36:57,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:36:57,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:36:57,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:36:57,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:36:57,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:36:57,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:36:57" (1/1) ... [2021-11-20 07:36:57,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588d9170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:57, skipping insertion in model container [2021-11-20 07:36:57,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:36:57" (1/1) ... [2021-11-20 07:36:57,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:36:57,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:36:58,132 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_b32d1260-fcc4-485d-831c-24f543d00827/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c[34014,34027] [2021-11-20 07:36:58,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:36:58,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:36:58,441 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_b32d1260-fcc4-485d-831c-24f543d00827/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c[34014,34027] [2021-11-20 07:36:58,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:36:58,553 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:36:58,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58 WrapperNode [2021-11-20 07:36:58,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:36:58,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:36:58,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:36:58,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:36:58,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,659 INFO L137 Inliner]: procedures = 133, calls = 227, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1125 [2021-11-20 07:36:58,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:36:58,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:36:58,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:36:58,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:36:58,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:36:58,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:36:58,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:36:58,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:36:58,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (1/1) ... [2021-11-20 07:36:58,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:36:58,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:36:58,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:36:58,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:36:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 07:36:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 07:36:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 07:36:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 07:36:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 07:36:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 07:36:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-20 07:36:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-20 07:36:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 07:36:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 07:36:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 07:36:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 07:36:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 07:36:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 07:36:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 07:36:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 07:36:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 07:36:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 07:36:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 07:36:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 07:36:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 07:36:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 07:36:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 07:36:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 07:36:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 07:36:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:36:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 07:36:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 07:36:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 07:36:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 07:36:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 07:36:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 07:36:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 07:36:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 07:36:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 07:36:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 07:36:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 07:36:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 07:36:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 07:36:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 07:36:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 07:36:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 07:36:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:36:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 07:36:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 07:36:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 07:36:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 07:36:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:36:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:36:59,217 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:36:59,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:36:59,940 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:36:59,951 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:36:59,951 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:36:59,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:36:59 BoogieIcfgContainer [2021-11-20 07:36:59,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:36:59,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:36:59,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:36:59,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:36:59,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:36:57" (1/3) ... [2021-11-20 07:36:59,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4075692f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:36:59, skipping insertion in model container [2021-11-20 07:36:59,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:36:58" (2/3) ... [2021-11-20 07:36:59,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4075692f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:36:59, skipping insertion in model container [2021-11-20 07:36:59,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:36:59" (3/3) ... [2021-11-20 07:36:59,962 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product27.cil.c [2021-11-20 07:36:59,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:36:59,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:37:00,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:37:00,025 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:37:00,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:37:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 398 states, 316 states have (on average 1.5664556962025316) internal successors, (495), 319 states have internal predecessors, (495), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-20 07:37:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 07:37:00,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:00,106 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-20 07:37:00,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2076588138, now seen corresponding path program 1 times [2021-11-20 07:37:00,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:00,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376024844] [2021-11-20 07:37:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:00,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 07:37:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:37:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:37:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:37:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-20 07:37:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:37:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:37:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:37:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:37:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 07:37:00,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:00,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376024844] [2021-11-20 07:37:00,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376024844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657729795] [2021-11-20 07:37:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:00,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:00,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:00,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:00,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:37:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:01,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:37:01,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:37:01,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:01,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657729795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:01,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:01,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-11-20 07:37:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989282142] [2021-11-20 07:37:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:01,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:37:01,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:37:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:01,359 INFO L87 Difference]: Start difference. First operand has 398 states, 316 states have (on average 1.5664556962025316) internal successors, (495), 319 states have internal predecessors, (495), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:01,462 INFO L93 Difference]: Finished difference Result 598 states and 904 transitions. [2021-11-20 07:37:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:37:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2021-11-20 07:37:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:01,490 INFO L225 Difference]: With dead ends: 598 [2021-11-20 07:37:01,490 INFO L226 Difference]: Without dead ends: 391 [2021-11-20 07:37:01,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:01,510 INFO L933 BasicCegarLoop]: 607 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, 607 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:01,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-20 07:37:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-11-20 07:37:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 310 states have (on average 1.5612903225806452) internal successors, (484), 312 states have internal predecessors, (484), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-20 07:37:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 599 transitions. [2021-11-20 07:37:01,619 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 599 transitions. Word has length 107 [2021-11-20 07:37:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:01,621 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 599 transitions. [2021-11-20 07:37:01,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 599 transitions. [2021-11-20 07:37:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 07:37:01,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:01,629 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-20 07:37:01,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:01,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:01,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash -631712386, now seen corresponding path program 1 times [2021-11-20 07:37:01,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028884659] [2021-11-20 07:37:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:01,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 07:37:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:37:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:37:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:37:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:37:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:37:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 07:37:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 07:37:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:37:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 07:37:02,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:02,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028884659] [2021-11-20 07:37:02,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028884659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:02,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673226902] [2021-11-20 07:37:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:02,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:02,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:02,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:02,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:37:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:37:02,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:37:02,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:02,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673226902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:02,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:02,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:02,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591598288] [2021-11-20 07:37:02,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:02,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:02,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:02,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:02,659 INFO L87 Difference]: Start difference. First operand 391 states and 599 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:02,717 INFO L93 Difference]: Finished difference Result 588 states and 882 transitions. [2021-11-20 07:37:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2021-11-20 07:37:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:02,722 INFO L225 Difference]: With dead ends: 588 [2021-11-20 07:37:02,722 INFO L226 Difference]: Without dead ends: 394 [2021-11-20 07:37:02,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:02,726 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:02,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1192 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-20 07:37:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2021-11-20 07:37:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 312 states have (on average 1.5576923076923077) internal successors, (486), 314 states have internal predecessors, (486), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-20 07:37:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 601 transitions. [2021-11-20 07:37:02,759 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 601 transitions. Word has length 108 [2021-11-20 07:37:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:02,760 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 601 transitions. [2021-11-20 07:37:02,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 601 transitions. [2021-11-20 07:37:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 07:37:02,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:02,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 07:37:02,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:02,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 07:37:02,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -234820301, now seen corresponding path program 1 times [2021-11-20 07:37:02,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:02,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015223939] [2021-11-20 07:37:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:02,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 07:37:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:37:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:37:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:37:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:37:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:37:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:37:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:37:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 07:37:03,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:03,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015223939] [2021-11-20 07:37:03,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015223939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:03,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142629755] [2021-11-20 07:37:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:03,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:03,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:03,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:03,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:37:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:37:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:37:03,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:03,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142629755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:03,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:03,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:03,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51480409] [2021-11-20 07:37:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:03,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:03,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:03,684 INFO L87 Difference]: Start difference. First operand 393 states and 601 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:03,742 INFO L93 Difference]: Finished difference Result 839 states and 1302 transitions. [2021-11-20 07:37:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:03,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-11-20 07:37:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:03,748 INFO L225 Difference]: With dead ends: 839 [2021-11-20 07:37:03,748 INFO L226 Difference]: Without dead ends: 473 [2021-11-20 07:37:03,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:03,753 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 142 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:03,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1177 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-20 07:37:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 465. [2021-11-20 07:37:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 370 states have (on average 1.5756756756756756) internal successors, (583), 372 states have internal predecessors, (583), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-20 07:37:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 726 transitions. [2021-11-20 07:37:03,789 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 726 transitions. Word has length 117 [2021-11-20 07:37:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:03,789 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 726 transitions. [2021-11-20 07:37:03,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 726 transitions. [2021-11-20 07:37:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 07:37:03,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:03,793 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 07:37:03,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:04,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:04,018 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1444038165, now seen corresponding path program 1 times [2021-11-20 07:37:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656179025] [2021-11-20 07:37:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:04,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 07:37:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:37:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:37:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 07:37:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:37:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:37:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:37:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:37:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:37:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:37:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 07:37:04,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:04,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656179025] [2021-11-20 07:37:04,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656179025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:04,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660425322] [2021-11-20 07:37:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:04,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:04,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:04,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:37:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:04,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:37:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:37:04,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:04,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660425322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:04,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:04,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 07:37:04,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329781857] [2021-11-20 07:37:04,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:04,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:37:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:37:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:37:04,705 INFO L87 Difference]: Start difference. First operand 465 states and 726 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:04,791 INFO L93 Difference]: Finished difference Result 921 states and 1442 transitions. [2021-11-20 07:37:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:37:04,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2021-11-20 07:37:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:04,800 INFO L225 Difference]: With dead ends: 921 [2021-11-20 07:37:04,800 INFO L226 Difference]: Without dead ends: 467 [2021-11-20 07:37:04,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:04,806 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 160 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:04,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 2178 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-20 07:37:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2021-11-20 07:37:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 371 states have (on average 1.5741239892183287) internal successors, (584), 374 states have internal predecessors, (584), 72 states have call successors, (72), 22 states have call predecessors, (72), 23 states have return successors, (73), 70 states have call predecessors, (73), 71 states have call successors, (73) [2021-11-20 07:37:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 729 transitions. [2021-11-20 07:37:04,847 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 729 transitions. Word has length 118 [2021-11-20 07:37:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:04,848 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 729 transitions. [2021-11-20 07:37:04,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 729 transitions. [2021-11-20 07:37:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 07:37:04,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:04,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:04,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:05,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:05,070 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1777333829, now seen corresponding path program 1 times [2021-11-20 07:37:05,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:05,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191775203] [2021-11-20 07:37:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:05,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 07:37:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:37:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:37:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 07:37:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:37:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:37:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:37:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:37:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:37:05,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191775203] [2021-11-20 07:37:05,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191775203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403512073] [2021-11-20 07:37:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:05,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:05,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:05,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:37:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:05,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:37:05,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:37:05,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403512073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-20 07:37:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258055525] [2021-11-20 07:37:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:37:05,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:37:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:37:05,798 INFO L87 Difference]: Start difference. First operand 467 states and 729 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:05,878 INFO L93 Difference]: Finished difference Result 923 states and 1447 transitions. [2021-11-20 07:37:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:37:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2021-11-20 07:37:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:05,883 INFO L225 Difference]: With dead ends: 923 [2021-11-20 07:37:05,883 INFO L226 Difference]: Without dead ends: 469 [2021-11-20 07:37:05,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:37:05,886 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 159 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:05,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2167 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-20 07:37:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2021-11-20 07:37:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 372 states have (on average 1.5725806451612903) internal successors, (585), 376 states have internal predecessors, (585), 72 states have call successors, (72), 22 states have call predecessors, (72), 24 states have return successors, (78), 70 states have call predecessors, (78), 71 states have call successors, (78) [2021-11-20 07:37:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 735 transitions. [2021-11-20 07:37:05,912 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 735 transitions. Word has length 119 [2021-11-20 07:37:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:05,912 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 735 transitions. [2021-11-20 07:37:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 735 transitions. [2021-11-20 07:37:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 07:37:05,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:05,916 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:05,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:06,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:06,133 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1938958555, now seen corresponding path program 1 times [2021-11-20 07:37:06,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:06,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433645071] [2021-11-20 07:37:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:06,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:37:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:37:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:37:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 07:37:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:37:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:37:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:37:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 07:37:06,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:06,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433645071] [2021-11-20 07:37:06,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433645071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:06,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:06,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:37:06,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890734486] [2021-11-20 07:37:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:06,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:37:06,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:37:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:06,292 INFO L87 Difference]: Start difference. First operand 469 states and 735 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:08,702 INFO L93 Difference]: Finished difference Result 1119 states and 1783 transitions. [2021-11-20 07:37:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:37:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2021-11-20 07:37:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:08,710 INFO L225 Difference]: With dead ends: 1119 [2021-11-20 07:37:08,711 INFO L226 Difference]: Without dead ends: 673 [2021-11-20 07:37:08,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:37:08,714 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1489 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:08,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 2065 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:37:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-20 07:37:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 469. [2021-11-20 07:37:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 372 states have (on average 1.5725806451612903) internal successors, (585), 376 states have internal predecessors, (585), 72 states have call successors, (72), 22 states have call predecessors, (72), 24 states have return successors, (77), 70 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-20 07:37:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 734 transitions. [2021-11-20 07:37:08,792 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 734 transitions. Word has length 120 [2021-11-20 07:37:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:08,792 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 734 transitions. [2021-11-20 07:37:08,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 734 transitions. [2021-11-20 07:37:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 07:37:08,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:08,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 07:37:08,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:37:08,797 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1280623071, now seen corresponding path program 2 times [2021-11-20 07:37:08,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:08,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77878719] [2021-11-20 07:37:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:08,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:37:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:37:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:37:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 07:37:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:37:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:37:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:37:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:37:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 07:37:08,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:08,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77878719] [2021-11-20 07:37:08,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77878719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:08,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:08,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:37:08,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678094387] [2021-11-20 07:37:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:08,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:37:08,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:37:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:08,938 INFO L87 Difference]: Start difference. First operand 469 states and 734 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:11,256 INFO L93 Difference]: Finished difference Result 1121 states and 1786 transitions. [2021-11-20 07:37:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:37:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2021-11-20 07:37:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:11,264 INFO L225 Difference]: With dead ends: 1121 [2021-11-20 07:37:11,264 INFO L226 Difference]: Without dead ends: 675 [2021-11-20 07:37:11,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:37:11,270 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 1484 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:11,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 2066 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:37:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-20 07:37:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 471. [2021-11-20 07:37:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 373 states have (on average 1.5710455764075066) internal successors, (586), 378 states have internal predecessors, (586), 72 states have call successors, (72), 22 states have call predecessors, (72), 25 states have return successors, (79), 70 states have call predecessors, (79), 71 states have call successors, (79) [2021-11-20 07:37:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 737 transitions. [2021-11-20 07:37:11,319 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 737 transitions. Word has length 121 [2021-11-20 07:37:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:11,319 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 737 transitions. [2021-11-20 07:37:11,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:37:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 737 transitions. [2021-11-20 07:37:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 07:37:11,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:11,323 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:11,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:37:11,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash -801045568, now seen corresponding path program 1 times [2021-11-20 07:37:11,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:11,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372215416] [2021-11-20 07:37:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:11,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:37:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 07:37:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:37:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 07:37:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:37:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:37:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:37:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:37:11,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:11,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372215416] [2021-11-20 07:37:11,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372215416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:11,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:11,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 07:37:11,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507954751] [2021-11-20 07:37:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:11,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:37:11,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:37:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:37:11,532 INFO L87 Difference]: Start difference. First operand 471 states and 737 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 07:37:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:14,673 INFO L93 Difference]: Finished difference Result 1119 states and 1781 transitions. [2021-11-20 07:37:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:37:14,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2021-11-20 07:37:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:14,681 INFO L225 Difference]: With dead ends: 1119 [2021-11-20 07:37:14,681 INFO L226 Difference]: Without dead ends: 675 [2021-11-20 07:37:14,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 07:37:14,684 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1628 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 4181 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 4800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:14,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 2684 Invalid, 4800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 4181 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 07:37:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-20 07:37:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 471. [2021-11-20 07:37:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 373 states have (on average 1.5710455764075066) internal successors, (586), 378 states have internal predecessors, (586), 72 states have call successors, (72), 22 states have call predecessors, (72), 25 states have return successors, (78), 70 states have call predecessors, (78), 71 states have call successors, (78) [2021-11-20 07:37:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 736 transitions. [2021-11-20 07:37:14,731 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 736 transitions. Word has length 122 [2021-11-20 07:37:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:14,731 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 736 transitions. [2021-11-20 07:37:14,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 07:37:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 736 transitions. [2021-11-20 07:37:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 07:37:14,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:14,736 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 07:37:14,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:37:14,736 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 554235044, now seen corresponding path program 2 times [2021-11-20 07:37:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:14,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958739789] [2021-11-20 07:37:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:14,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 07:37:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 07:37:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:37:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:37:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:37:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:37:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:37:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:37:14,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:14,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958739789] [2021-11-20 07:37:14,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958739789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:14,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:14,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 07:37:14,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092329723] [2021-11-20 07:37:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:14,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:37:14,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:37:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:37:14,902 INFO L87 Difference]: Start difference. First operand 471 states and 736 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 07:37:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:17,829 INFO L93 Difference]: Finished difference Result 1121 states and 1787 transitions. [2021-11-20 07:37:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:37:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-11-20 07:37:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:17,837 INFO L225 Difference]: With dead ends: 1121 [2021-11-20 07:37:17,837 INFO L226 Difference]: Without dead ends: 677 [2021-11-20 07:37:17,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 07:37:17,843 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 1625 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 4824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:17,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 2677 Invalid, 4824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:37:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-11-20 07:37:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 473. [2021-11-20 07:37:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 374 states have (on average 1.5695187165775402) internal successors, (587), 380 states have internal predecessors, (587), 72 states have call successors, (72), 22 states have call predecessors, (72), 26 states have return successors, (83), 70 states have call predecessors, (83), 71 states have call successors, (83) [2021-11-20 07:37:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 742 transitions. [2021-11-20 07:37:17,893 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 742 transitions. Word has length 123 [2021-11-20 07:37:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 742 transitions. [2021-11-20 07:37:17,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 07:37:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 742 transitions. [2021-11-20 07:37:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 07:37:17,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:17,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:17,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:37:17,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1056972187, now seen corresponding path program 1 times [2021-11-20 07:37:17,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:17,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587477973] [2021-11-20 07:37:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:17,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 07:37:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:37:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:37:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:37:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:37:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:37:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:37:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 07:37:18,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587477973] [2021-11-20 07:37:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587477973] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339897469] [2021-11-20 07:37:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:18,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:18,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:18,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:37:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:18,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:37:18,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:18,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:37:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:18,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339897469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:37:18,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:37:18,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-11-20 07:37:18,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773540005] [2021-11-20 07:37:18,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:37:18,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 07:37:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 07:37:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:37:18,848 INFO L87 Difference]: Start difference. First operand 473 states and 742 transitions. Second operand has 15 states, 14 states have (on average 9.5) internal successors, (133), 11 states have internal predecessors, (133), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 07:37:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:23,001 INFO L93 Difference]: Finished difference Result 2030 states and 3425 transitions. [2021-11-20 07:37:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:37:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.5) internal successors, (133), 11 states have internal predecessors, (133), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 124 [2021-11-20 07:37:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:23,026 INFO L225 Difference]: With dead ends: 2030 [2021-11-20 07:37:23,026 INFO L226 Difference]: Without dead ends: 1588 [2021-11-20 07:37:23,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-20 07:37:23,030 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 4404 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 1674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 6880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1674 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:23,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 4940 Invalid, 6880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1674 Valid, 5206 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 07:37:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-11-20 07:37:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 916. [2021-11-20 07:37:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 738 states have (on average 1.6165311653116532) internal successors, (1193), 744 states have internal predecessors, (1193), 151 states have call successors, (151), 22 states have call predecessors, (151), 26 states have return successors, (172), 149 states have call predecessors, (172), 150 states have call successors, (172) [2021-11-20 07:37:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1516 transitions. [2021-11-20 07:37:23,142 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1516 transitions. Word has length 124 [2021-11-20 07:37:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:23,142 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1516 transitions. [2021-11-20 07:37:23,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.5) internal successors, (133), 11 states have internal predecessors, (133), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 07:37:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1516 transitions. [2021-11-20 07:37:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 07:37:23,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:23,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:23,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:23,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:23,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1032995972, now seen corresponding path program 1 times [2021-11-20 07:37:23,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:23,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917426391] [2021-11-20 07:37:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:23,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 07:37:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:37:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 07:37:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:37:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:37:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:37:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:37:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:23,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:23,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917426391] [2021-11-20 07:37:23,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917426391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:23,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:23,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:23,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132500366] [2021-11-20 07:37:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:23,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:23,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:23,568 INFO L87 Difference]: Start difference. First operand 916 states and 1516 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:25,435 INFO L93 Difference]: Finished difference Result 2381 states and 4033 transitions. [2021-11-20 07:37:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-11-20 07:37:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:25,448 INFO L225 Difference]: With dead ends: 2381 [2021-11-20 07:37:25,449 INFO L226 Difference]: Without dead ends: 1543 [2021-11-20 07:37:25,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:25,454 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 1479 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:25,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1726 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 07:37:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-11-20 07:37:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1331. [2021-11-20 07:37:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1074 states have (on average 1.632216014897579) internal successors, (1753), 1080 states have internal predecessors, (1753), 230 states have call successors, (230), 22 states have call predecessors, (230), 26 states have return successors, (261), 228 states have call predecessors, (261), 229 states have call successors, (261) [2021-11-20 07:37:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2244 transitions. [2021-11-20 07:37:25,610 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2244 transitions. Word has length 127 [2021-11-20 07:37:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:25,611 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 2244 transitions. [2021-11-20 07:37:25,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2244 transitions. [2021-11-20 07:37:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 07:37:25,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:25,622 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:37:25,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash -534050665, now seen corresponding path program 1 times [2021-11-20 07:37:25,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:25,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052295281] [2021-11-20 07:37:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:25,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 07:37:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:37:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:37:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:37:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:37:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:37:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:25,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052295281] [2021-11-20 07:37:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052295281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:25,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:25,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:25,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886535097] [2021-11-20 07:37:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:25,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:25,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:25,758 INFO L87 Difference]: Start difference. First operand 1331 states and 2244 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:27,676 INFO L93 Difference]: Finished difference Result 3420 states and 5846 transitions. [2021-11-20 07:37:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:27,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-11-20 07:37:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:27,695 INFO L225 Difference]: With dead ends: 3420 [2021-11-20 07:37:27,696 INFO L226 Difference]: Without dead ends: 2220 [2021-11-20 07:37:27,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:27,703 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1477 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:27,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1698 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 07:37:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-11-20 07:37:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2008. [2021-11-20 07:37:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1632 states have (on average 1.639093137254902) internal successors, (2675), 1638 states have internal predecessors, (2675), 349 states have call successors, (349), 22 states have call predecessors, (349), 26 states have return successors, (380), 347 states have call predecessors, (380), 348 states have call successors, (380) [2021-11-20 07:37:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3404 transitions. [2021-11-20 07:37:27,921 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3404 transitions. Word has length 128 [2021-11-20 07:37:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:27,921 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 3404 transitions. [2021-11-20 07:37:27,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3404 transitions. [2021-11-20 07:37:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 07:37:27,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:27,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:27,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:37:27,937 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1223020714, now seen corresponding path program 1 times [2021-11-20 07:37:27,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:27,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809381455] [2021-11-20 07:37:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:27,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:37:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:37:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:37:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:37:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:37:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:37:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 07:37:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:28,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:28,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809381455] [2021-11-20 07:37:28,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809381455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:28,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:28,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:28,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635799400] [2021-11-20 07:37:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:28,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:28,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:28,064 INFO L87 Difference]: Start difference. First operand 2008 states and 3404 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:29,728 INFO L93 Difference]: Finished difference Result 5005 states and 8625 transitions. [2021-11-20 07:37:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-11-20 07:37:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:29,755 INFO L225 Difference]: With dead ends: 5005 [2021-11-20 07:37:29,756 INFO L226 Difference]: Without dead ends: 3263 [2021-11-20 07:37:29,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:29,765 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1475 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:29,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1697 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:37:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-20 07:37:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3051. [2021-11-20 07:37:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2513 states have (on average 1.6446478312773578) internal successors, (4133), 2519 states have internal predecessors, (4133), 511 states have call successors, (511), 22 states have call predecessors, (511), 26 states have return successors, (558), 509 states have call predecessors, (558), 510 states have call successors, (558) [2021-11-20 07:37:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 5202 transitions. [2021-11-20 07:37:30,097 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 5202 transitions. Word has length 129 [2021-11-20 07:37:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:30,097 INFO L470 AbstractCegarLoop]: Abstraction has 3051 states and 5202 transitions. [2021-11-20 07:37:30,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 5202 transitions. [2021-11-20 07:37:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 07:37:30,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:30,118 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:30,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:37:30,118 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1804521560, now seen corresponding path program 1 times [2021-11-20 07:37:30,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:30,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012874814] [2021-11-20 07:37:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:30,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 07:37:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:37:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:37:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:37:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:37:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:37:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:37:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:30,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:30,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012874814] [2021-11-20 07:37:30,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012874814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:30,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:30,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:30,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650353162] [2021-11-20 07:37:30,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:30,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:30,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:30,233 INFO L87 Difference]: Start difference. First operand 3051 states and 5202 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:32,074 INFO L93 Difference]: Finished difference Result 7519 states and 13040 transitions. [2021-11-20 07:37:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-11-20 07:37:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:32,113 INFO L225 Difference]: With dead ends: 7519 [2021-11-20 07:37:32,113 INFO L226 Difference]: Without dead ends: 4953 [2021-11-20 07:37:32,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:32,123 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1470 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:32,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1488 Valid, 1700 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:37:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2021-11-20 07:37:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4741. [2021-11-20 07:37:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4741 states, 3958 states have (on average 1.6485598787266296) internal successors, (6525), 3964 states have internal predecessors, (6525), 756 states have call successors, (756), 22 states have call predecessors, (756), 26 states have return successors, (829), 754 states have call predecessors, (829), 755 states have call successors, (829) [2021-11-20 07:37:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8110 transitions. [2021-11-20 07:37:32,584 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8110 transitions. Word has length 130 [2021-11-20 07:37:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:32,585 INFO L470 AbstractCegarLoop]: Abstraction has 4741 states and 8110 transitions. [2021-11-20 07:37:32,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8110 transitions. [2021-11-20 07:37:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 07:37:32,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:32,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:32,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:37:32,624 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1236037510, now seen corresponding path program 1 times [2021-11-20 07:37:32,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188611013] [2021-11-20 07:37:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:37:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:37:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 07:37:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:37:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:37:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:37:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 07:37:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:32,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188611013] [2021-11-20 07:37:32,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188611013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:32,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:32,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:32,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472710151] [2021-11-20 07:37:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:32,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:32,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:32,748 INFO L87 Difference]: Start difference. First operand 4741 states and 8110 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:34,929 INFO L93 Difference]: Finished difference Result 11720 states and 20417 transitions. [2021-11-20 07:37:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-11-20 07:37:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:35,001 INFO L225 Difference]: With dead ends: 11720 [2021-11-20 07:37:35,002 INFO L226 Difference]: Without dead ends: 7796 [2021-11-20 07:37:35,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:35,019 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1470 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:35,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1723 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:37:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2021-11-20 07:37:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 7584. [2021-11-20 07:37:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 6308 states have (on average 1.6461636017755232) internal successors, (10384), 6314 states have internal predecessors, (10384), 1249 states have call successors, (1249), 22 states have call predecessors, (1249), 26 states have return successors, (1366), 1247 states have call predecessors, (1366), 1248 states have call successors, (1366) [2021-11-20 07:37:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 12999 transitions. [2021-11-20 07:37:35,715 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 12999 transitions. Word has length 131 [2021-11-20 07:37:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 7584 states and 12999 transitions. [2021-11-20 07:37:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 12999 transitions. [2021-11-20 07:37:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 07:37:35,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:35,748 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:35,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:37:35,749 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1439988092, now seen corresponding path program 1 times [2021-11-20 07:37:35,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625196235] [2021-11-20 07:37:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:35,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:37:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:37:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:37:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:37:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:37:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-20 07:37:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:35,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625196235] [2021-11-20 07:37:35,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625196235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:35,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:35,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:35,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948681265] [2021-11-20 07:37:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:35,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:35,871 INFO L87 Difference]: Start difference. First operand 7584 states and 12999 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:38,068 INFO L93 Difference]: Finished difference Result 19335 states and 33693 transitions. [2021-11-20 07:37:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-11-20 07:37:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:38,142 INFO L225 Difference]: With dead ends: 19335 [2021-11-20 07:37:38,142 INFO L226 Difference]: Without dead ends: 12970 [2021-11-20 07:37:38,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:38,170 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 1468 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:38,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1704 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:37:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12970 states. [2021-11-20 07:37:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12970 to 12758. [2021-11-20 07:37:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12758 states, 10660 states have (on average 1.6460600375234522) internal successors, (17547), 10666 states have internal predecessors, (17547), 2071 states have call successors, (2071), 22 states have call predecessors, (2071), 26 states have return successors, (2266), 2069 states have call predecessors, (2266), 2070 states have call successors, (2266) [2021-11-20 07:37:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12758 states to 12758 states and 21884 transitions. [2021-11-20 07:37:39,250 INFO L78 Accepts]: Start accepts. Automaton has 12758 states and 21884 transitions. Word has length 132 [2021-11-20 07:37:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:39,251 INFO L470 AbstractCegarLoop]: Abstraction has 12758 states and 21884 transitions. [2021-11-20 07:37:39,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12758 states and 21884 transitions. [2021-11-20 07:37:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 07:37:39,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:39,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:39,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:37:39,294 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -886491372, now seen corresponding path program 1 times [2021-11-20 07:37:39,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:39,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521505391] [2021-11-20 07:37:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:39,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:37:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:37:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 07:37:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:37:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:37:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:37:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 07:37:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:39,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521505391] [2021-11-20 07:37:39,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521505391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:39,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:39,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:39,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131459905] [2021-11-20 07:37:39,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:39,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:39,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:39,414 INFO L87 Difference]: Start difference. First operand 12758 states and 21884 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:41,917 INFO L93 Difference]: Finished difference Result 30818 states and 53393 transitions. [2021-11-20 07:37:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-11-20 07:37:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:42,022 INFO L225 Difference]: With dead ends: 30818 [2021-11-20 07:37:42,022 INFO L226 Difference]: Without dead ends: 20283 [2021-11-20 07:37:42,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:42,061 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1469 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:42,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1488 Valid, 1677 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:37:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2021-11-20 07:37:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 20071. [2021-11-20 07:37:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20071 states, 16770 states have (on average 1.621526535480024) internal successors, (27193), 16776 states have internal predecessors, (27193), 3274 states have call successors, (3274), 22 states have call predecessors, (3274), 26 states have return successors, (3613), 3272 states have call predecessors, (3613), 3273 states have call successors, (3613) [2021-11-20 07:37:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20071 states to 20071 states and 34080 transitions. [2021-11-20 07:37:43,503 INFO L78 Accepts]: Start accepts. Automaton has 20071 states and 34080 transitions. Word has length 133 [2021-11-20 07:37:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:43,503 INFO L470 AbstractCegarLoop]: Abstraction has 20071 states and 34080 transitions. [2021-11-20 07:37:43,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 20071 states and 34080 transitions. [2021-11-20 07:37:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:37:43,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:43,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:43,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:37:43,536 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:43,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 313182813, now seen corresponding path program 1 times [2021-11-20 07:37:43,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:43,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351548578] [2021-11-20 07:37:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:43,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:37:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 07:37:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:37:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:37:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:37:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:37:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:37:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:43,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351548578] [2021-11-20 07:37:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351548578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:43,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895368200] [2021-11-20 07:37:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:43,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:43,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:43,653 INFO L87 Difference]: Start difference. First operand 20071 states and 34080 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:47,141 INFO L93 Difference]: Finished difference Result 53260 states and 91927 transitions. [2021-11-20 07:37:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-11-20 07:37:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:47,338 INFO L225 Difference]: With dead ends: 53260 [2021-11-20 07:37:47,339 INFO L226 Difference]: Without dead ends: 36089 [2021-11-20 07:37:47,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:47,394 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1465 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:47,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1702 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:37:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36089 states. [2021-11-20 07:37:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36089 to 35877. [2021-11-20 07:37:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35877 states, 30126 states have (on average 1.618369514704906) internal successors, (48755), 30132 states have internal predecessors, (48755), 5724 states have call successors, (5724), 22 states have call predecessors, (5724), 26 states have return successors, (6337), 5722 states have call predecessors, (6337), 5723 states have call successors, (6337) [2021-11-20 07:37:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35877 states to 35877 states and 60816 transitions. [2021-11-20 07:37:50,063 INFO L78 Accepts]: Start accepts. Automaton has 35877 states and 60816 transitions. Word has length 134 [2021-11-20 07:37:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:50,064 INFO L470 AbstractCegarLoop]: Abstraction has 35877 states and 60816 transitions. [2021-11-20 07:37:50,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 35877 states and 60816 transitions. [2021-11-20 07:37:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 07:37:50,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:50,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:50,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 07:37:50,110 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1635141582, now seen corresponding path program 1 times [2021-11-20 07:37:50,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:50,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841401035] [2021-11-20 07:37:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:50,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:37:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:37:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:37:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:37:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:37:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:37:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:37:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:37:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:37:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:37:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:37:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:37:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:37:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:37:50,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:50,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841401035] [2021-11-20 07:37:50,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841401035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:50,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:50,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:50,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300429885] [2021-11-20 07:37:50,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:50,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:50,264 INFO L87 Difference]: Start difference. First operand 35877 states and 60816 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:37:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:55,070 INFO L93 Difference]: Finished difference Result 98107 states and 168486 transitions. [2021-11-20 07:37:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-11-20 07:37:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:55,437 INFO L225 Difference]: With dead ends: 98107 [2021-11-20 07:37:55,438 INFO L226 Difference]: Without dead ends: 66086 [2021-11-20 07:37:55,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:55,523 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 1460 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:55,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1709 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:37:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66086 states. [2021-11-20 07:37:59,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66086 to 65874. [2021-11-20 07:38:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65874 states, 55610 states have (on average 1.614242042798058) internal successors, (89768), 55616 states have internal predecessors, (89768), 10237 states have call successors, (10237), 22 states have call predecessors, (10237), 26 states have return successors, (11382), 10235 states have call predecessors, (11382), 10236 states have call successors, (11382) [2021-11-20 07:38:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65874 states to 65874 states and 111387 transitions. [2021-11-20 07:38:00,442 INFO L78 Accepts]: Start accepts. Automaton has 65874 states and 111387 transitions. Word has length 135 [2021-11-20 07:38:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:00,442 INFO L470 AbstractCegarLoop]: Abstraction has 65874 states and 111387 transitions. [2021-11-20 07:38:00,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:38:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 65874 states and 111387 transitions. [2021-11-20 07:38:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-20 07:38:00,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:00,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:00,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 07:38:00,480 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2142740189, now seen corresponding path program 1 times [2021-11-20 07:38:00,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:00,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342756774] [2021-11-20 07:38:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:00,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:38:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:38:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:38:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:38:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:38:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:38:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:38:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:38:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:38:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:38:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:38:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:38:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 07:38:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 07:38:00,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:00,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342756774] [2021-11-20 07:38:00,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342756774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:00,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:00,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:38:00,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17640249] [2021-11-20 07:38:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:00,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:38:00,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:38:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:38:00,595 INFO L87 Difference]: Start difference. First operand 65874 states and 111387 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:38:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:07,879 INFO L93 Difference]: Finished difference Result 123768 states and 212919 transitions. [2021-11-20 07:38:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:38:07,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 136 [2021-11-20 07:38:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:08,303 INFO L225 Difference]: With dead ends: 123768 [2021-11-20 07:38:08,303 INFO L226 Difference]: Without dead ends: 123574 [2021-11-20 07:38:08,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:38:08,529 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1461 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:08,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 1701 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:38:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123574 states. [2021-11-20 07:38:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123574 to 123362. [2021-11-20 07:38:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123362 states, 104730 states have (on average 1.6090900410579585) internal successors, (168520), 104736 states have internal predecessors, (168520), 18605 states have call successors, (18605), 22 states have call predecessors, (18605), 26 states have return successors, (20796), 18603 states have call predecessors, (20796), 18604 states have call successors, (20796) [2021-11-20 07:38:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123362 states to 123362 states and 207921 transitions. [2021-11-20 07:38:16,947 INFO L78 Accepts]: Start accepts. Automaton has 123362 states and 207921 transitions. Word has length 136 [2021-11-20 07:38:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:16,948 INFO L470 AbstractCegarLoop]: Abstraction has 123362 states and 207921 transitions. [2021-11-20 07:38:16,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:38:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 123362 states and 207921 transitions. [2021-11-20 07:38:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 07:38:17,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:17,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 07:38:17,446 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1589985133, now seen corresponding path program 1 times [2021-11-20 07:38:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:17,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222113185] [2021-11-20 07:38:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:17,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:38:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:38:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:38:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 07:38:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:38:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:38:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:38:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:38:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:38:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:38:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:38:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:38:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 07:38:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:38:17,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:17,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222113185] [2021-11-20 07:38:17,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222113185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:17,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001667931] [2021-11-20 07:38:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:17,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:17,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:17,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b32d1260-fcc4-485d-831c-24f543d00827/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:38:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:17,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:38:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:38:18,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 07:38:18,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001667931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:18,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:38:18,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2021-11-20 07:38:18,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927077912] [2021-11-20 07:38:18,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:18,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 07:38:18,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 07:38:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:38:18,878 INFO L87 Difference]: Start difference. First operand 123362 states and 207921 transitions. Second operand has 23 states, 23 states have (on average 10.0) internal successors, (230), 18 states have internal predecessors, (230), 4 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36)