./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9 --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 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e --- 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-6b4ec56 [2022-11-20 20:48:47,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:48:47,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:48:47,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:48:47,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:48:47,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:48:47,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:48:47,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:48:47,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:48:47,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:48:47,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:48:47,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:48:47,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:48:47,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:48:47,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:48:47,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:48:47,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:48:47,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:48:47,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:48:47,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:48:47,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:48:47,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:48:47,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:48:47,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:48:47,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:48:47,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:48:47,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:48:47,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:48:47,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:48:47,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:48:47,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:48:47,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:48:47,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:48:47,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:48:47,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:48:47,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:48:47,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:48:47,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:48:47,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:48:47,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:48:47,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:48:47,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:48:47,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:48:47,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:48:47,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:48:47,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:48:47,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:48:47,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:48:47,193 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:48:47,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:48:47,193 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:48:47,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:48:47,194 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:48:47,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:48:47,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:48:47,194 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:48:47,196 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:48:47,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:48:47,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:48:47,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:48:47,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:48:47,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:48:47,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:48:47,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:48:47,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:48:47,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:48:47,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:48:47,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:48:47,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:48:47,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:48:47,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:48:47,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:48:47,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:48:47,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:48:47,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:48:47,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:48:47,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:48:47,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:48:47,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:48:47,203 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:48:47,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:48:47,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:48:47,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:48:47,203 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_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34de882518b863b3a10882f7e6c83b5092b3f8512e5800a72c11385e11ff9a6e [2022-11-20 20:48:47,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:48:47,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:48:47,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:48:47,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:48:47,546 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:48:47,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2022-11-20 20:48:50,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:48:51,013 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:48:51,014 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c [2022-11-20 20:48:51,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/data/5415b689a/46d42016ecae4983a5058894e9f4cfe5/FLAG6e275a185 [2022-11-20 20:48:51,060 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/data/5415b689a/46d42016ecae4983a5058894e9f4cfe5 [2022-11-20 20:48:51,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:48:51,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:48:51,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:48:51,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:48:51,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:48:51,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:51,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132523d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51, skipping insertion in model container [2022-11-20 20:48:51,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:51,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:48:51,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:48:51,606 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_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-11-20 20:48:51,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:48:51,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:48:51,859 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_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/sv-benchmarks/c/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-11-20 20:48:51,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:48:51,945 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:48:51,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51 WrapperNode [2022-11-20 20:48:51,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:48:51,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:48:51,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:48:51,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:48:51,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:51,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,064 INFO L138 Inliner]: procedures = 125, calls = 195, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 895 [2022-11-20 20:48:52,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:48:52,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:48:52,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:48:52,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:48:52,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:48:52,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:48:52,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:48:52,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:48:52,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (1/1) ... [2022-11-20 20:48:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:48:52,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:48:52,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:48:52,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:48:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:48:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:48:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:48:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:48:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:48:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:48:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:48:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:48:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:48:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:48:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:48:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:48:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:48:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:48:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:48:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:48:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:48:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:48:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:48:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:48:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:48:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:48:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:48:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:48:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:48:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:48:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:48:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:48:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:48:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:48:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:48:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:48:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:48:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:48:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:48:52,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:48:52,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:48:53,378 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:48:53,946 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:48:53,946 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:48:53,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:53 BoogieIcfgContainer [2022-11-20 20:48:53,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:48:53,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:48:53,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:48:53,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:48:53,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:48:51" (1/3) ... [2022-11-20 20:48:53,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d4025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:53, skipping insertion in model container [2022-11-20 20:48:53,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:51" (2/3) ... [2022-11-20 20:48:53,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419d4025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:53, skipping insertion in model container [2022-11-20 20:48:53,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:53" (3/3) ... [2022-11-20 20:48:53,962 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2022-11-20 20:48:53,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:48:53,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:48:54,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:48:54,045 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;@66e0546d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:48:54,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:48:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-20 20:48:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 20:48:54,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:54,089 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 20:48:54,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2126102577, now seen corresponding path program 1 times [2022-11-20 20:48:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:54,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442848407] [2022-11-20 20:48:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:54,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:54,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442848407] [2022-11-20 20:48:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442848407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:54,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:54,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:48:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069574037] [2022-11-20 20:48:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:54,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:48:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:48:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:48:54,528 INFO L87 Difference]: Start difference. First operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:54,681 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2022-11-20 20:48:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:48:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-20 20:48:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:54,698 INFO L225 Difference]: With dead ends: 221 [2022-11-20 20:48:54,698 INFO L226 Difference]: Without dead ends: 149 [2022-11-20 20:48:54,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:48:54,707 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:54,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-20 20:48:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-20 20:48:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 91 states have internal predecessors, (117), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-20 20:48:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-11-20 20:48:54,785 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 66 [2022-11-20 20:48:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:54,787 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-11-20 20:48:54,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-11-20 20:48:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:48:54,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:54,800 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 20:48:54,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:48:54,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1259755910, now seen corresponding path program 1 times [2022-11-20 20:48:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:54,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233491369] [2022-11-20 20:48:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:55,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:55,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233491369] [2022-11-20 20:48:55,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233491369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:55,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:55,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5888865] [2022-11-20 20:48:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:55,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:55,051 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:55,185 INFO L93 Difference]: Finished difference Result 217 states and 280 transitions. [2022-11-20 20:48:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2022-11-20 20:48:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:55,187 INFO L225 Difference]: With dead ends: 217 [2022-11-20 20:48:55,188 INFO L226 Difference]: Without dead ends: 151 [2022-11-20 20:48:55,189 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 [2022-11-20 20:48:55,190 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:55,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-20 20:48:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-20 20:48:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 93 states have internal predecessors, (119), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-20 20:48:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2022-11-20 20:48:55,205 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 67 [2022-11-20 20:48:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:55,206 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2022-11-20 20:48:55,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2022-11-20 20:48:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:48:55,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:55,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:55,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:48:55,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1209431013, now seen corresponding path program 1 times [2022-11-20 20:48:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:55,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80658512] [2022-11-20 20:48:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:55,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:55,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:55,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80658512] [2022-11-20 20:48:55,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80658512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:55,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:55,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34231699] [2022-11-20 20:48:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:55,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:55,377 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:55,486 INFO L93 Difference]: Finished difference Result 332 states and 463 transitions. [2022-11-20 20:48:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:55,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-20 20:48:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:55,493 INFO L225 Difference]: With dead ends: 332 [2022-11-20 20:48:55,495 INFO L226 Difference]: Without dead ends: 199 [2022-11-20 20:48:55,502 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 [2022-11-20 20:48:55,505 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:55,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 352 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:48:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-20 20:48:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 194. [2022-11-20 20:48:55,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 125 states have internal predecessors, (172), 53 states have call successors, (53), 18 states have call predecessors, (53), 18 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-20 20:48:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 277 transitions. [2022-11-20 20:48:55,539 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 277 transitions. Word has length 72 [2022-11-20 20:48:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:55,541 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 277 transitions. [2022-11-20 20:48:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:48:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 277 transitions. [2022-11-20 20:48:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:48:55,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:55,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:48:55,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:55,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:55,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2058511959, now seen corresponding path program 1 times [2022-11-20 20:48:55,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:55,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297474311] [2022-11-20 20:48:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:55,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297474311] [2022-11-20 20:48:55,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297474311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:48:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71002397] [2022-11-20 20:48:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:55,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:48:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:48:55,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:48:55,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:48:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:56,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:48:56,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:48:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:56,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:48:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:48:56,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71002397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:48:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2061525515] [2022-11-20 20:48:56,376 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-20 20:48:56,377 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:48:56,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:48:56,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:48:56,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:49:38,399 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 20:49:38,719 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:49:39,106 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:50:28,899 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 508 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:50:49,677 WARN L233 SmtUtils]: Spent 20.42s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:10,591 WARN L233 SmtUtils]: Spent 20.53s on a formula simplification. DAG size of input: 593 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:25,695 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 545 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:25,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2061525515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:51:25,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:51:25,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-20 20:51:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045019375] [2022-11-20 20:51:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:51:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 20:51:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 20:51:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:51:25,711 INFO L87 Difference]: Start difference. First operand 194 states and 277 transitions. Second operand has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 20:51:37,246 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 529 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:47,568 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 529 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:58,688 WARN L233 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 591 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:52:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:52:10,695 INFO L93 Difference]: Finished difference Result 471 states and 722 transitions. [2022-11-20 20:52:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 20:52:10,696 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 73 [2022-11-20 20:52:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:52:10,699 INFO L225 Difference]: With dead ends: 471 [2022-11-20 20:52:10,699 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 20:52:10,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 142.4s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:52:10,701 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 146 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:52:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2461 Invalid, 1772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-20 20:52:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 20:52:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 222. [2022-11-20 20:52:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 1.4161073825503356) internal successors, (211), 152 states have internal predecessors, (211), 53 states have call successors, (53), 19 states have call predecessors, (53), 19 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-20 20:52:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2022-11-20 20:52:10,864 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 73 [2022-11-20 20:52:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:52:10,864 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2022-11-20 20:52:10,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 20:52:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2022-11-20 20:52:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 20:52:10,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:52:10,867 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:52:10,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:52:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:52:11,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:52:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:52:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash -871564781, now seen corresponding path program 1 times [2022-11-20 20:52:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:52:11,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992684086] [2022-11-20 20:52:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:11,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:52:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:52:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:52:11,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:52:11,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992684086] [2022-11-20 20:52:11,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992684086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:52:11,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198375618] [2022-11-20 20:52:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:52:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:52:11,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:52:11,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:52:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:52:11,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:52:11,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:52:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:52:11,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:52:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:52:11,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198375618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:52:11,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [349836738] [2022-11-20 20:52:11,645 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-20 20:52:11,645 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:52:11,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:52:11,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:52:11,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:52:53,409 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:52:53,727 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-20 20:52:54,042 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-20 20:52:55,577 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-20 20:52:55,615 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 253 for LOIs [2022-11-20 20:53:01,808 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 448 for LOIs [2022-11-20 20:53:02,384 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-20 20:53:04,181 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:53:21,941 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:59,220 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 508 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:54:10,322 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:54:21,419 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 586 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:54:41,969 WARN L233 SmtUtils]: Spent 20.19s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:55:02,447 WARN L233 SmtUtils]: Spent 20.08s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:55:12,493 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 569 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:55:27,333 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 471 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:55:56,520 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 448 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:09,085 WARN L233 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 467 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [349836738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:36,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:56:36,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2022-11-20 20:56:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423358540] [2022-11-20 20:56:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 20:56:36,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 20:56:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2514, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 20:56:36,070 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 20:57:01,478 WARN L233 SmtUtils]: Spent 13.57s on a formula simplification. DAG size of input: 522 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:15,523 WARN L233 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 520 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:21,986 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 494 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:29,130 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 553 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:36,542 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 558 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:43,713 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 560 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:51,577 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 558 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:58,831 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 569 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:06,481 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 560 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:20,441 WARN L233 SmtUtils]: Spent 13.46s on a formula simplification. DAG size of input: 591 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:28,518 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 549 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:35,944 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 554 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:43,353 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 556 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:59:05,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:05,161 INFO L93 Difference]: Finished difference Result 553 states and 836 transitions. [2022-11-20 20:59:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-20 20:59:05,162 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 79 [2022-11-20 20:59:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:05,165 INFO L225 Difference]: With dead ends: 553 [2022-11-20 20:59:05,166 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 20:59:05,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 336.8s TimeCoverageRelationStatistics Valid=262, Invalid=4568, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 20:59:05,169 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 271 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 5255 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:05,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 4405 Invalid, 5302 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [47 Valid, 5255 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2022-11-20 20:59:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 20:59:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 293. [2022-11-20 20:59:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 211 states have internal predecessors, (296), 62 states have call successors, (62), 25 states have call predecessors, (62), 24 states have return successors, (61), 58 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 20:59:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 419 transitions. [2022-11-20 20:59:05,422 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 419 transitions. Word has length 79 [2022-11-20 20:59:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:05,423 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 419 transitions. [2022-11-20 20:59:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 32 states have (on average 1.28125) internal successors, (41), 30 states have internal predecessors, (41), 15 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 20:59:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 419 transitions. [2022-11-20 20:59:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 20:59:05,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:05,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:59:05,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:59:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:05,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:59:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:05,634 INFO L85 PathProgramCache]: Analyzing trace with hash 345328811, now seen corresponding path program 1 times [2022-11-20 20:59:05,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:05,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401034591] [2022-11-20 20:59:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:05,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:59:05,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401034591] [2022-11-20 20:59:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401034591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:59:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878966106] [2022-11-20 20:59:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:05,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:59:05,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:59:05,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:59:05,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88d4bf2-8e33-4407-bd83-8ce42c2d87c7/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:59:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:06,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:59:06,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:59:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:59:06,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:59:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:59:06,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878966106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:59:06,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81544640] [2022-11-20 20:59:06,289 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-20 20:59:06,289 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:59:06,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:59:06,290 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:59:06,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:00:50,848 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 21:00:51,162 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 419 for LOIs [2022-11-20 21:00:51,448 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 418 for LOIs [2022-11-20 21:00:51,735 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 218 for LOIs [2022-11-20 21:00:51,804 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 21:00:52,105 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:01:09,772 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:44,830 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 508 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:06,467 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 529 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:20,453 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 523 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)