./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:50:37,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:50:37,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:50:37,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:50:37,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:50:37,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:50:37,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:50:37,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:50:37,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:50:37,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:50:37,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:50:37,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:50:37,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:50:37,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:50:37,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:50:37,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:50:37,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:50:37,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:50:37,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:50:37,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:50:37,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:50:37,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:50:37,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:50:37,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:50:37,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:50:37,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:50:37,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:50:37,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:50:37,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:50:37,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:50:37,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:50:37,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:50:37,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:50:37,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:50:37,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:50:37,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:50:37,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:50:37,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:50:37,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:50:37,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:50:37,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:50:37,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:50:37,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:50:37,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:50:37,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:50:37,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:50:37,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:50:37,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:50:37,265 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:50:37,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:50:37,266 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:50:37,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:50:37,267 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:50:37,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:50:37,268 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:50:37,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:50:37,268 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:50:37,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:50:37,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:50:37,269 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:50:37,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:50:37,270 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:50:37,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:50:37,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:50:37,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:50:37,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:50:37,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:50:37,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:50:37,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:50:37,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:50:37,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:50:37,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:50:37,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:50:37,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:50:37,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:50:37,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:50:37,274 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:50:37,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:50:37,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:50:37,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:50:37,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:50:37,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:50:37,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:50:37,276 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_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2022-11-26 00:50:37,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:50:37,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:50:37,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:50:37,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:50:37,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:50:37,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-26 00:50:40,821 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:50:41,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:50:41,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2022-11-26 00:50:41,301 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/data/aaf4ed032/5165270bb9e6414cb459cbd46fc0678c/FLAGc1e274c7b [2022-11-26 00:50:41,316 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/data/aaf4ed032/5165270bb9e6414cb459cbd46fc0678c [2022-11-26 00:50:41,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:50:41,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:50:41,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:50:41,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:50:41,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:50:41,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:50:41" (1/1) ... [2022-11-26 00:50:41,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5493d402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:41, skipping insertion in model container [2022-11-26 00:50:41,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:50:41" (1/1) ... [2022-11-26 00:50:41,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:50:41,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:50:41,672 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,701 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,704 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,719 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,777 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,877 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,882 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:41,896 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,082 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-26 00:50:42,126 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:50:42,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:50:42,170 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,175 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,176 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,179 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,194 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,198 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,203 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,207 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,209 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,251 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2022-11-26 00:50:42,274 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:50:42,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:50:42,310 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:50:42,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42 WrapperNode [2022-11-26 00:50:42,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:50:42,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:50:42,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:50:42,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:50:42,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,501 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2022-11-26 00:50:42,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:50:42,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:50:42,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:50:42,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:50:42,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:50:42,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:50:42,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:50:42,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:50:42,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (1/1) ... [2022-11-26 00:50:42,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:50:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:50:42,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:50:42,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:50:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-26 00:50:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-26 00:50:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-26 00:50:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-26 00:50:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-26 00:50:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-26 00:50:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-26 00:50:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-26 00:50:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-26 00:50:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-26 00:50:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-26 00:50:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-26 00:50:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-26 00:50:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-26 00:50:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-26 00:50:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-26 00:50:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-26 00:50:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-26 00:50:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-26 00:50:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-26 00:50:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-26 00:50:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-26 00:50:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-26 00:50:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-26 00:50:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-26 00:50:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-26 00:50:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-26 00:50:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-26 00:50:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-26 00:50:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-26 00:50:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-26 00:50:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-26 00:50:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-26 00:50:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-26 00:50:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-26 00:50:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-26 00:50:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-26 00:50:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-26 00:50:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-26 00:50:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-26 00:50:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-26 00:50:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-26 00:50:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-26 00:50:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-26 00:50:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-26 00:50:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-26 00:50:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-26 00:50:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:50:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-26 00:50:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-26 00:50:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-26 00:50:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-26 00:50:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-26 00:50:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-26 00:50:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-26 00:50:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-26 00:50:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-26 00:50:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-26 00:50:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-26 00:50:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-26 00:50:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-26 00:50:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-26 00:50:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-26 00:50:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-26 00:50:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-26 00:50:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-26 00:50:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-26 00:50:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-26 00:50:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-26 00:50:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-26 00:50:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-26 00:50:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-26 00:50:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-26 00:50:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-26 00:50:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-26 00:50:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-26 00:50:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-26 00:50:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-26 00:50:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-26 00:50:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-26 00:50:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:50:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-26 00:50:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-26 00:50:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-26 00:50:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-26 00:50:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-26 00:50:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-26 00:50:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-26 00:50:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-26 00:50:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:50:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:50:43,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:50:43,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:50:44,415 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:50:45,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:50:45,350 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:50:45,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:45 BoogieIcfgContainer [2022-11-26 00:50:45,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:50:45,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:50:45,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:50:45,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:50:45,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:50:41" (1/3) ... [2022-11-26 00:50:45,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4724b261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:45, skipping insertion in model container [2022-11-26 00:50:45,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:50:42" (2/3) ... [2022-11-26 00:50:45,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4724b261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:50:45, skipping insertion in model container [2022-11-26 00:50:45,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:50:45" (3/3) ... [2022-11-26 00:50:45,363 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2022-11-26 00:50:45,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:50:45,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:50:45,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:50:45,446 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@545784a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:50:45,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:50:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-26 00:50:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-26 00:50:45,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:45,472 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2022-11-26 00:50:45,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:50:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1108954499, now seen corresponding path program 1 times [2022-11-26 00:50:45,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:45,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357272764] [2022-11-26 00:50:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:45,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:46,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:46,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357272764] [2022-11-26 00:50:46,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357272764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:46,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:46,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:50:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326620069] [2022-11-26 00:50:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:46,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:50:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:50:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:50:46,244 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:46,697 INFO L93 Difference]: Finished difference Result 726 states and 998 transitions. [2022-11-26 00:50:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:50:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-26 00:50:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:46,721 INFO L225 Difference]: With dead ends: 726 [2022-11-26 00:50:46,721 INFO L226 Difference]: Without dead ends: 374 [2022-11-26 00:50:46,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:50:46,737 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:46,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-26 00:50:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-26 00:50:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-26 00:50:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-26 00:50:46,834 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2022-11-26 00:50:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:46,837 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-26 00:50:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-26 00:50:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-26 00:50:46,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:46,849 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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, 1, 1, 1] [2022-11-26 00:50:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:50:46,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:50:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash 448457004, now seen corresponding path program 1 times [2022-11-26 00:50:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:46,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107216606] [2022-11-26 00:50:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:47,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:47,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107216606] [2022-11-26 00:50:47,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107216606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:47,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:47,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411827852] [2022-11-26 00:50:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:47,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:47,252 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,434 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2022-11-26 00:50:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:47,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2022-11-26 00:50:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,440 INFO L225 Difference]: With dead ends: 592 [2022-11-26 00:50:47,440 INFO L226 Difference]: Without dead ends: 376 [2022-11-26 00:50:47,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:47,448 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:50:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-26 00:50:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-26 00:50:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-26 00:50:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2022-11-26 00:50:47,490 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2022-11-26 00:50:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:47,492 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2022-11-26 00:50:47,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2022-11-26 00:50:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-26 00:50:47,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:47,505 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:50:47,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:50:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -120524735, now seen corresponding path program 1 times [2022-11-26 00:50:47,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:47,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586573087] [2022-11-26 00:50:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:47,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586573087] [2022-11-26 00:50:47,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586573087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:47,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:47,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:47,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384780185] [2022-11-26 00:50:47,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:47,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:47,696 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,876 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2022-11-26 00:50:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2022-11-26 00:50:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,880 INFO L225 Difference]: With dead ends: 751 [2022-11-26 00:50:47,880 INFO L226 Difference]: Without dead ends: 443 [2022-11-26 00:50:47,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:47,883 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:50:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-26 00:50:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-11-26 00:50:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-26 00:50:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2022-11-26 00:50:47,907 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2022-11-26 00:50:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2022-11-26 00:50:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 00:50:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2022-11-26 00:50:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:50:47,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:47,911 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:47,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:50:47,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:50:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1825392753, now seen corresponding path program 1 times [2022-11-26 00:50:47,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810477151] [2022-11-26 00:50:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:48,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810477151] [2022-11-26 00:50:48,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810477151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:50:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212168833] [2022-11-26 00:50:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:50:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:50:48,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:50:48,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:50:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:48,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:50:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:50:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:48,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:50:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 00:50:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212168833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:50:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [784681657] [2022-11-26 00:50:48,956 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-26 00:50:48,956 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:50:48,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:50:48,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:50:48,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:51:21,210 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-26 00:51:22,389 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-26 00:51:23,885 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-26 00:51:26,044 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-26 00:51:26,360 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-26 00:51:27,984 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2022-11-26 00:51:28,344 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-26 00:51:28,387 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2022-11-26 00:51:28,534 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 262 for LOIs [2022-11-26 00:51:28,662 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 260 for LOIs [2022-11-26 00:51:28,799 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-26 00:51:34,750 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-26 00:51:35,716 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-26 00:51:36,466 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 443 for LOIs [2022-11-26 00:51:51,115 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-11-26 00:51:53,941 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 433 for LOIs [2022-11-26 00:51:54,187 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 432 for LOIs [2022-11-26 00:51:54,438 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-26 00:51:54,479 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-26 00:51:56,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:53:32,468 WARN L233 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:53:49,648 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 518 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:19,097 WARN L233 SmtUtils]: Spent 21.64s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:28,876 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:37,217 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 551 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:48,921 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 474 DAG size of output: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:55:37,431 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 525 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:56:12,476 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 443 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:56:19,654 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 447 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:56:26,912 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 455 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:18,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [784681657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:57:18,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:18,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2022-11-26 00:57:18,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134237189] [2022-11-26 00:57:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:57:18,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-26 00:57:18,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:18,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-26 00:57:18,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2022-11-26 00:57:18,864 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-26 00:57:31,010 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 543 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:37,122 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 542 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:43,440 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 541 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:49,553 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 540 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:55,698 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 539 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:58:01,776 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 538 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:58:07,794 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:58:35,701 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:58:41,573 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 557 DAG size of output: 537 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:58:51,814 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:59:01,991 WARN L233 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:59:08,133 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 564 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:59:20,506 WARN L233 SmtUtils]: Spent 11.35s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:59:33,040 WARN L233 SmtUtils]: Spent 11.34s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:01:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:06,831 INFO L93 Difference]: Finished difference Result 1271 states and 1848 transitions. [2022-11-26 01:01:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-26 01:01:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 133 [2022-11-26 01:01:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:06,838 INFO L225 Difference]: With dead ends: 1271 [2022-11-26 01:01:06,838 INFO L226 Difference]: Without dead ends: 854 [2022-11-26 01:01:06,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5228 ImplicationChecksByTransitivity, 455.0s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2022-11-26 01:01:06,845 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 511 mSDsluCounter, 13547 mSDsCounter, 0 mSdLazyCounter, 20836 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 14011 SdHoareTripleChecker+Invalid, 20922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 20836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:06,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 14011 Invalid, 20922 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [86 Valid, 20836 Invalid, 0 Unknown, 0 Unchecked, 93.9s Time] [2022-11-26 01:01:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-26 01:01:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 688. [2022-11-26 01:01:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 501 states have internal predecessors, (651), 144 states have call successors, (144), 68 states have call predecessors, (144), 64 states have return successors, (147), 137 states have call predecessors, (147), 143 states have call successors, (147) [2022-11-26 01:01:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 942 transitions. [2022-11-26 01:01:07,145 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 942 transitions. Word has length 133 [2022-11-26 01:01:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:07,146 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 942 transitions. [2022-11-26 01:01:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-26 01:01:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 942 transitions. [2022-11-26 01:01:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-26 01:01:07,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:07,151 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:07,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:07,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:07,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:01:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2034615151, now seen corresponding path program 1 times [2022-11-26 01:01:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:07,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474187927] [2022-11-26 01:01:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-26 01:01:07,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:07,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474187927] [2022-11-26 01:01:07,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474187927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:07,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:07,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:01:07,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608745119] [2022-11-26 01:01:07,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:07,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:01:07,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:07,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:01:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:07,518 INFO L87 Difference]: Start difference. First operand 688 states and 942 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 01:01:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:08,251 INFO L93 Difference]: Finished difference Result 1712 states and 2406 transitions. [2022-11-26 01:01:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:01:08,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2022-11-26 01:01:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:08,260 INFO L225 Difference]: With dead ends: 1712 [2022-11-26 01:01:08,260 INFO L226 Difference]: Without dead ends: 1075 [2022-11-26 01:01:08,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:08,264 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:08,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:01:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-26 01:01:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1071. [2022-11-26 01:01:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 715 states have (on average 1.353846153846154) internal successors, (968), 754 states have internal predecessors, (968), 249 states have call successors, (249), 110 states have call predecessors, (249), 106 states have return successors, (271), 241 states have call predecessors, (271), 247 states have call successors, (271) [2022-11-26 01:01:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1488 transitions. [2022-11-26 01:01:08,692 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1488 transitions. Word has length 135 [2022-11-26 01:01:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:08,692 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1488 transitions. [2022-11-26 01:01:08,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 01:01:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1488 transitions. [2022-11-26 01:01:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 01:01:08,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:08,698 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:01:08,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:01:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1838399742, now seen corresponding path program 1 times [2022-11-26 01:01:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:08,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551331630] [2022-11-26 01:01:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:01:08,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:08,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551331630] [2022-11-26 01:01:08,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551331630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038810496] [2022-11-26 01:01:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:08,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:08,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:08,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:08,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a73e599-bd28-47e2-a164-0183f870d77b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:01:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:09,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:01:09,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:01:09,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-26 01:01:09,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038810496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:09,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271082321] [2022-11-26 01:01:09,385 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-26 01:01:09,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:09,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:09,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:09,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:33,954 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-26 01:01:34,967 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-26 01:01:36,287 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2022-11-26 01:01:38,103 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-26 01:01:38,428 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-26 01:01:39,711 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-11-26 01:01:40,037 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2022-11-26 01:01:40,074 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2022-11-26 01:01:40,204 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 264 for LOIs [2022-11-26 01:01:40,327 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 262 for LOIs [2022-11-26 01:01:40,454 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2022-11-26 01:01:45,614 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2022-11-26 01:01:46,390 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2022-11-26 01:01:47,301 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 439 for LOIs [2022-11-26 01:02:00,696 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 433 for LOIs [2022-11-26 01:02:03,322 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 431 for LOIs [2022-11-26 01:02:03,544 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 428 for LOIs [2022-11-26 01:02:03,776 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-26 01:02:03,821 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-26 01:02:08,468 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:03:34,608 WARN L233 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 720 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)