./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI --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 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- 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-5e519f3 [2022-11-03 03:52:17,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:52:17,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:52:17,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:52:17,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:52:17,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:52:17,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:52:17,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:52:17,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:52:17,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:52:17,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:52:17,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:52:17,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:52:17,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:52:17,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:52:17,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:52:17,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:52:17,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:52:17,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:52:17,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:52:17,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:52:17,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:52:17,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:52:17,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:52:17,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:52:17,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:52:17,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:52:17,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:52:17,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:52:17,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:52:17,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:52:17,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:52:17,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:52:17,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:52:17,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:52:17,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:52:17,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:52:17,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:52:17,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:52:17,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:52:17,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:52:17,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:52:17,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:52:17,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:52:17,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:52:17,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:52:17,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:52:17,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:52:17,328 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:52:17,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:52:17,328 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:52:17,329 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:52:17,330 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:52:17,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:52:17,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:52:17,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:52:17,331 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:52:17,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:52:17,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:52:17,332 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:52:17,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:52:17,333 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:52:17,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:52:17,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:52:17,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:52:17,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:52:17,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:52:17,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:52:17,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:52:17,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:52:17,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:52:17,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:52:17,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:52:17,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:52:17,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:17,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:52:17,339 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:52:17,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:52:17,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:52:17,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:52:17,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:52:17,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:52:17,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:52:17,340 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_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2022-11-03 03:52:17,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:52:17,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:52:17,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:52:17,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:52:17,810 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:52:17,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-11-03 03:52:17,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/data/e7bac046d/c3c8ba34bc464b9495799e458b61d380/FLAG8d4c128ee [2022-11-03 03:52:18,602 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:52:18,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-11-03 03:52:18,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/data/e7bac046d/c3c8ba34bc464b9495799e458b61d380/FLAG8d4c128ee [2022-11-03 03:52:18,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/data/e7bac046d/c3c8ba34bc464b9495799e458b61d380 [2022-11-03 03:52:18,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:52:18,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:52:18,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:18,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:52:18,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:52:18,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:18" (1/1) ... [2022-11-03 03:52:18,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8f98ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:18, skipping insertion in model container [2022-11-03 03:52:18,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:18" (1/1) ... [2022-11-03 03:52:18,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:52:18,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:52:19,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-11-03 03:52:19,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:19,494 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:52:19,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-11-03 03:52:19,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:19,702 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:52:19,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19 WrapperNode [2022-11-03 03:52:19,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:19,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:19,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:52:19,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:52:19,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,793 INFO L138 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-11-03 03:52:19,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:19,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:52:19,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:52:19,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:52:19,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:52:19,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:52:19,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:52:19,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:52:19,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (1/1) ... [2022-11-03 03:52:19,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:19,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:52:19,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:52:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:52:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:52:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:52:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:52:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:52:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:52:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:52:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:52:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:52:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:52:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:52:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:52:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:52:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:52:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:52:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:52:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:52:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:52:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:52:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:52:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:52:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:52:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:52:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:52:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:52:19,942 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:52:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:52:19,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:52:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:52:19,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:52:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:52:19,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:52:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:52:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:52:19,943 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:52:19,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:52:19,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:52:20,170 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:52:20,173 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:52:21,198 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:52:21,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:52:21,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:52:21,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:21 BoogieIcfgContainer [2022-11-03 03:52:21,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:52:21,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:52:21,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:52:21,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:52:21,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:18" (1/3) ... [2022-11-03 03:52:21,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d518ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:21, skipping insertion in model container [2022-11-03 03:52:21,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:19" (2/3) ... [2022-11-03 03:52:21,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d518ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:21, skipping insertion in model container [2022-11-03 03:52:21,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:21" (3/3) ... [2022-11-03 03:52:21,698 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2022-11-03 03:52:21,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:52:21,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:52:21,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:52:21,784 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;@696cb361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:52:21,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:52:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 03:52:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:52:21,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:21,801 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 03:52:21,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1798849747, now seen corresponding path program 1 times [2022-11-03 03:52:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462602793] [2022-11-03 03:52:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:22,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:22,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462602793] [2022-11-03 03:52:22,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462602793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:22,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:22,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:52:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927359350] [2022-11-03 03:52:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:22,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:52:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:52:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:52:22,292 INFO L87 Difference]: Start difference. First operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:22,457 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2022-11-03 03:52:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:52:22,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2022-11-03 03:52:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:22,478 INFO L225 Difference]: With dead ends: 227 [2022-11-03 03:52:22,478 INFO L226 Difference]: Without dead ends: 152 [2022-11-03 03:52:22,484 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 [2022-11-03 03:52:22,494 INFO L413 NwaCegarLoop]: 183 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, 183 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 [2022-11-03 03:52:22,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-03 03:52:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-03 03:52:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-03 03:52:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2022-11-03 03:52:22,574 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 56 [2022-11-03 03:52:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:22,576 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2022-11-03 03:52:22,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2022-11-03 03:52:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 03:52:22,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:22,590 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 03:52:22,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:52:22,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash -127855960, now seen corresponding path program 1 times [2022-11-03 03:52:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:22,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933144453] [2022-11-03 03:52:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:22,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:22,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933144453] [2022-11-03 03:52:22,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933144453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:22,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:22,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400029839] [2022-11-03 03:52:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:22,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:22,919 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:23,071 INFO L93 Difference]: Finished difference Result 223 states and 298 transitions. [2022-11-03 03:52:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-11-03 03:52:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:23,074 INFO L225 Difference]: With dead ends: 223 [2022-11-03 03:52:23,074 INFO L226 Difference]: Without dead ends: 154 [2022-11-03 03:52:23,075 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 [2022-11-03 03:52:23,076 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 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 [2022-11-03 03:52:23,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-03 03:52:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-03 03:52:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.326086956521739) internal successors, (122), 95 states have internal predecessors, (122), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-03 03:52:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-11-03 03:52:23,093 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 57 [2022-11-03 03:52:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:23,093 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-03 03:52:23,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-11-03 03:52:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:52:23,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:23,096 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] [2022-11-03 03:52:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:52:23,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -377461035, now seen corresponding path program 1 times [2022-11-03 03:52:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864779947] [2022-11-03 03:52:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:23,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:23,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864779947] [2022-11-03 03:52:23,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864779947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:23,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:23,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454423329] [2022-11-03 03:52:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:23,260 INFO L87 Difference]: Start difference. First operand 154 states and 211 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:23,380 INFO L93 Difference]: Finished difference Result 338 states and 481 transitions. [2022-11-03 03:52:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:23,381 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-03 03:52:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:23,390 INFO L225 Difference]: With dead ends: 338 [2022-11-03 03:52:23,390 INFO L226 Difference]: Without dead ends: 202 [2022-11-03 03:52:23,396 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 [2022-11-03 03:52:23,401 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:23,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-03 03:52:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2022-11-03 03:52:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 127 states have internal predecessors, (175), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-03 03:52:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-11-03 03:52:23,435 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 62 [2022-11-03 03:52:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:23,436 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-11-03 03:52:23,436 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:52:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-11-03 03:52:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:52:23,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:23,446 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] [2022-11-03 03:52:23,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:52:23,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1851970374, now seen corresponding path program 1 times [2022-11-03 03:52:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:23,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113062388] [2022-11-03 03:52:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:23,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:23,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113062388] [2022-11-03 03:52:23,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113062388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:23,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917336253] [2022-11-03 03:52:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:23,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:23,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:23,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:52:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:23,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:52:24,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:24,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 03:52:24,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917336253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:52:24,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1460667039] [2022-11-03 03:52:24,152 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-03 03:52:24,152 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:52:24,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:52:24,162 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:52:24,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:52:56,154 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:52:56,471 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 03:52:56,814 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:53:10,964 WARN L234 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:18,036 WARN L234 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:25,374 WARN L234 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:32,588 WARN L234 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:39,142 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:51,338 WARN L234 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:53:57,287 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:05,691 WARN L234 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:17,915 WARN L234 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 582 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:42,078 WARN L234 SmtUtils]: Spent 22.87s on a formula simplification. DAG size of input: 584 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:51,328 WARN L234 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 572 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:02,087 WARN L234 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 570 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1460667039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:03,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:55:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 03:55:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479359677] [2022-11-03 03:55:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:55:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:55:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:55:03,445 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-03 03:55:11,725 WARN L234 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 537 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:29,032 WARN L234 SmtUtils]: Spent 16.25s on a formula simplification. DAG size of input: 559 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:37,170 INFO L93 Difference]: Finished difference Result 474 states and 734 transitions. [2022-11-03 03:55:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:55:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 63 [2022-11-03 03:55:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:37,178 INFO L225 Difference]: With dead ends: 474 [2022-11-03 03:55:37,178 INFO L226 Difference]: Without dead ends: 295 [2022-11-03 03:55:37,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 149.7s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:55:37,181 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 110 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:37,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2870 Invalid, 2064 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [14 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 03:55:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-03 03:55:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 220. [2022-11-03 03:55:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 149 states have internal predecessors, (208), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-03 03:55:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 319 transitions. [2022-11-03 03:55:37,350 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 319 transitions. Word has length 63 [2022-11-03 03:55:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:37,351 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 319 transitions. [2022-11-03 03:55:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-03 03:55:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 319 transitions. [2022-11-03 03:55:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:55:37,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:37,353 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 03:55:37,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:37,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash 195838519, now seen corresponding path program 1 times [2022-11-03 03:55:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430571792] [2022-11-03 03:55:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:55:37,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430571792] [2022-11-03 03:55:37,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430571792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:37,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:37,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338500426] [2022-11-03 03:55:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:37,725 INFO L87 Difference]: Start difference. First operand 220 states and 319 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:55:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:38,019 INFO L93 Difference]: Finished difference Result 533 states and 802 transitions. [2022-11-03 03:55:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:38,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-11-03 03:55:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:38,024 INFO L225 Difference]: With dead ends: 533 [2022-11-03 03:55:38,024 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 03:55:38,025 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 [2022-11-03 03:55:38,027 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 55 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:38,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:55:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 03:55:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2022-11-03 03:55:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 233 states have (on average 1.4763948497854078) internal successors, (344), 236 states have internal predecessors, (344), 81 states have call successors, (81), 17 states have call predecessors, (81), 17 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-03 03:55:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 505 transitions. [2022-11-03 03:55:38,219 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 505 transitions. Word has length 68 [2022-11-03 03:55:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:38,220 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 505 transitions. [2022-11-03 03:55:38,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:55:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 505 transitions. [2022-11-03 03:55:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 03:55:38,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:38,223 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 03:55:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:55:38,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:38,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash -864267835, now seen corresponding path program 1 times [2022-11-03 03:55:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:38,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662526282] [2022-11-03 03:55:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:55:38,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662526282] [2022-11-03 03:55:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662526282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155991451] [2022-11-03 03:55:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:38,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:38,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:38,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:38,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:55:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:38,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:38,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:55:38,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:55:38,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155991451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:38,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781483330] [2022-11-03 03:55:38,756 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-03 03:55:38,756 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:55:38,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:55:38,757 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:55:38,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:56:18,175 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:56:18,483 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-03 03:56:18,790 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-03 03:56:20,439 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-03 03:56:20,477 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-03 03:56:38,301 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-03 03:56:38,334 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-03 03:56:39,103 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:56:53,572 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:00,846 WARN L234 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:07,623 WARN L234 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:14,072 WARN L234 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:20,937 WARN L234 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:33,448 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:39,587 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:48,607 WARN L234 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:15,832 WARN L234 SmtUtils]: Spent 25.55s on a formula simplification. DAG size of input: 587 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:29,122 WARN L234 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 589 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:35,978 WARN L234 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 569 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:53,489 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 454 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:59,473 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 469 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:59:32,576 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 598 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:59:36,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1781483330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:36,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:36,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-03 03:59:36,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231961032] [2022-11-03 03:59:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:36,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-03 03:59:36,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-03 03:59:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 03:59:36,237 INFO L87 Difference]: Start difference. First operand 332 states and 505 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:00:01,573 WARN L234 SmtUtils]: Spent 22.36s on a formula simplification. DAG size of input: 504 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:07,237 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 468 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:53,683 WARN L234 SmtUtils]: Spent 10.71s on a formula simplification. DAG size of input: 589 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:01:05,465 WARN L234 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 595 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:01:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:52,630 INFO L93 Difference]: Finished difference Result 786 states and 1247 transitions. [2022-11-03 04:01:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 04:01:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-11-03 04:01:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:52,634 INFO L225 Difference]: With dead ends: 786 [2022-11-03 04:01:52,635 INFO L226 Difference]: Without dead ends: 517 [2022-11-03 04:01:52,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 289.8s TimeCoverageRelationStatistics Valid=317, Invalid=4375, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:01:52,638 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 267 mSDsluCounter, 4430 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 5520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:52,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 4495 Invalid, 5520 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [41 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2022-11-03 04:01:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-03 04:01:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 415. [2022-11-03 04:01:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 303 states have (on average 1.504950495049505) internal successors, (456), 308 states have internal predecessors, (456), 90 states have call successors, (90), 23 states have call predecessors, (90), 21 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-03 04:01:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 635 transitions. [2022-11-03 04:01:52,961 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 635 transitions. Word has length 69 [2022-11-03 04:01:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:52,961 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 635 transitions. [2022-11-03 04:01:52,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 635 transitions. [2022-11-03 04:01:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 04:01:52,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:52,965 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, 1, 1, 1, 1, 1] [2022-11-03 04:01:53,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:53,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:53,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1040193002, now seen corresponding path program 1 times [2022-11-03 04:01:53,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:53,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111587425] [2022-11-03 04:01:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:01:53,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:53,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111587425] [2022-11-03 04:01:53,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111587425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:53,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549668480] [2022-11-03 04:01:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:53,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:53,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:53,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7732faf6-cc9b-4fe7-8018-0b3a416e29c0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:01:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:53,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:01:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:01:53,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:01:53,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549668480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:53,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296999539] [2022-11-03 04:01:53,767 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-03 04:01:53,767 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:53,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:53,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:53,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:02:39,082 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:02:39,517 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 236 for LOIs [2022-11-03 04:02:39,601 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2022-11-03 04:02:40,026 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-03 04:02:40,416 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 245 for LOIs [2022-11-03 04:02:40,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:56,807 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:04,955 WARN L234 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:13,563 WARN L234 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:21,938 WARN L234 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:29,592 WARN L234 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:44,226 WARN L234 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:51,234 WARN L234 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:00,951 WARN L234 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:17,835 WARN L234 SmtUtils]: Spent 16.39s on a formula simplification. DAG size of input: 623 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:23,669 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 407 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:32,541 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 572 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:52,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [296999539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:52,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:04:52,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-03 04:04:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154223622] [2022-11-03 04:04:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 04:04:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 04:04:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:04:52,210 INFO L87 Difference]: Start difference. First operand 415 states and 635 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14)