./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product23.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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/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 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a --- 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 04:09:49,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:49,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:49,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:49,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:49,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:49,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:49,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:49,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:49,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:49,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:49,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:49,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:49,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:49,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:49,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:49,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:49,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:49,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:49,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:49,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:49,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:49,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:49,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:49,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:49,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:49,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:49,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:49,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:49,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:49,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:49,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:49,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:49,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:49,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:49,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:49,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:49,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:49,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:49,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:49,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:49,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:09:49,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:49,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:49,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:49,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:49,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:49,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:49,849 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:49,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:49,849 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:49,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:49,850 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:49,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:49,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:49,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:49,851 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:49,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:49,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:49,852 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:49,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:49,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:49,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:49,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:49,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:49,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:49,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:49,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:49,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:49,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:49,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:49,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:49,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:49,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:49,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:49,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:49,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:49,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:49,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:49,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:49,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:49,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:49,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:49,858 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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a [2022-11-03 04:09:50,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:50,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:50,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:50,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:50,230 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:50,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-03 04:09:50,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/data/7341f37f7/d0f77271ad8346c1928392d483a5d299/FLAGb87c1d7e7 [2022-11-03 04:09:50,956 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:50,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2022-11-03 04:09:50,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/data/7341f37f7/d0f77271ad8346c1928392d483a5d299/FLAGb87c1d7e7 [2022-11-03 04:09:51,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/data/7341f37f7/d0f77271ad8346c1928392d483a5d299 [2022-11-03 04:09:51,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:51,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:51,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:51,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:51,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:51,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:51" (1/1) ... [2022-11-03 04:09:51,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6656d203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:51, skipping insertion in model container [2022-11-03 04:09:51,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:51" (1/1) ... [2022-11-03 04:09:51,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:51,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:51,788 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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-03 04:09:52,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:52,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:52,135 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_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2022-11-03 04:09:52,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:52,231 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:52,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52 WrapperNode [2022-11-03 04:09:52,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:52,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:52,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:52,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:52,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,379 INFO L138 Inliner]: procedures = 130, calls = 215, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 978 [2022-11-03 04:09:52,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:52,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:52,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:52,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:52,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:52,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:52,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:52,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:52,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (1/1) ... [2022-11-03 04:09:52,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:52,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:52,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 04:09:52,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 04:09:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 04:09:52,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 04:09:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 04:09:52,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 04:09:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 04:09:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 04:09:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 04:09:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 04:09:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 04:09:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 04:09:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 04:09:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 04:09:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 04:09:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 04:09:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 04:09:52,581 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 04:09:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 04:09:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 04:09:52,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 04:09:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 04:09:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 04:09:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 04:09:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 04:09:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 04:09:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 04:09:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 04:09:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 04:09:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 04:09:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 04:09:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 04:09:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 04:09:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 04:09:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 04:09:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 04:09:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 04:09:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 04:09:52,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 04:09:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 04:09:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 04:09:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 04:09:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 04:09:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:52,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:52,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:54,085 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:54,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:54,810 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:09:54,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:54 BoogieIcfgContainer [2022-11-03 04:09:54,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:54,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:54,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:54,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:54,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:51" (1/3) ... [2022-11-03 04:09:54,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e1c615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:54, skipping insertion in model container [2022-11-03 04:09:54,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:52" (2/3) ... [2022-11-03 04:09:54,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e1c615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:54, skipping insertion in model container [2022-11-03 04:09:54,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:54" (3/3) ... [2022-11-03 04:09:54,823 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product23.cil.c [2022-11-03 04:09:54,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:54,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:09:54,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:54,903 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;@5b592686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:54,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:09:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 04:09:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 04:09:54,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:54,921 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, 1, 1, 1] [2022-11-03 04:09:54,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:54,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 207041302, now seen corresponding path program 1 times [2022-11-03 04:09:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179795877] [2022-11-03 04:09:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:55,382 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 04:09:55,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:55,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179795877] [2022-11-03 04:09:55,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179795877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:55,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:55,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:09:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406333960] [2022-11-03 04:09:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:09:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:09:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:09:55,432 INFO L87 Difference]: Start difference. First operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:55,619 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2022-11-03 04:09:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:09:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-03 04:09:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:55,634 INFO L225 Difference]: With dead ends: 252 [2022-11-03 04:09:55,635 INFO L226 Difference]: Without dead ends: 169 [2022-11-03 04:09:55,639 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 04:09:55,642 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:55,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-03 04:09:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-03 04:09:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 04:09:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2022-11-03 04:09:55,703 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2022-11-03 04:09:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:55,705 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2022-11-03 04:09:55,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2022-11-03 04:09:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:09:55,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:55,709 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, 1, 1, 1, 1] [2022-11-03 04:09:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:55,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728976, now seen corresponding path program 1 times [2022-11-03 04:09:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:55,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763952896] [2022-11-03 04:09:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:55,967 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 04:09:55,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:55,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763952896] [2022-11-03 04:09:55,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763952896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:55,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:55,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611414022] [2022-11-03 04:09:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:55,971 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:56,126 INFO L93 Difference]: Finished difference Result 248 states and 320 transitions. [2022-11-03 04:09:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:56,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-03 04:09:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:56,133 INFO L225 Difference]: With dead ends: 248 [2022-11-03 04:09:56,137 INFO L226 Difference]: Without dead ends: 171 [2022-11-03 04:09:56,138 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 04:09:56,139 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:56,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-03 04:09:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-03 04:09:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-03 04:09:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 227 transitions. [2022-11-03 04:09:56,177 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 227 transitions. Word has length 61 [2022-11-03 04:09:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:56,178 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 227 transitions. [2022-11-03 04:09:56,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 227 transitions. [2022-11-03 04:09:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 04:09:56,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:56,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:56,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:09:56,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash 595308532, now seen corresponding path program 1 times [2022-11-03 04:09:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:56,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684058675] [2022-11-03 04:09:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:56,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:56,335 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 04:09:56,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:56,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684058675] [2022-11-03 04:09:56,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684058675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:56,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:56,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145708220] [2022-11-03 04:09:56,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:56,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:56,340 INFO L87 Difference]: Start difference. First operand 171 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:56,530 INFO L93 Difference]: Finished difference Result 377 states and 521 transitions. [2022-11-03 04:09:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-03 04:09:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:56,534 INFO L225 Difference]: With dead ends: 377 [2022-11-03 04:09:56,535 INFO L226 Difference]: Without dead ends: 224 [2022-11-03 04:09:56,536 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 04:09:56,537 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 59 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:56,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 394 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-03 04:09:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-11-03 04:09:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 21 states have call predecessors, (64), 21 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 04:09:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2022-11-03 04:09:56,562 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 66 [2022-11-03 04:09:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:56,563 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2022-11-03 04:09:56,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 04:09:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2022-11-03 04:09:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 04:09:56,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:56,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:56,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:09:56,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -53160458, now seen corresponding path program 1 times [2022-11-03 04:09:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:56,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566398828] [2022-11-03 04:09:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:56,754 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 04:09:56,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:56,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566398828] [2022-11-03 04:09:56,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566398828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:56,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914133523] [2022-11-03 04:09:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:56,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:56,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:56,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:56,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:09:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:57,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:09:57,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:57,214 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 04:09:57,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:57,302 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 04:09:57,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914133523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:57,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807105782] [2022-11-03 04:09:57,327 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-03 04:09:57,328 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:09:57,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:09:57,339 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:09:57,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:40,352 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:10:40,710 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:10:41,077 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-03 04:10:43,054 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 04:10:43,099 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-03 04:10:47,025 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2022-11-03 04:10:50,309 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-03 04:10:50,344 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-03 04:10:50,416 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 04:10:55,992 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 242 for LOIs [2022-11-03 04:10:56,038 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:11:09,301 WARN L234 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:15,382 WARN L234 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:32,920 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 482 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:18,677 WARN L234 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 477 DAG size of output: 275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:27,474 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 499 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:11,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [807105782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:11,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:13:11,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-03 04:13:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538184191] [2022-11-03 04:13:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:11,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 04:13:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:13:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 04:13:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2721, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 04:13:11,151 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:14:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:03,732 INFO L93 Difference]: Finished difference Result 630 states and 978 transitions. [2022-11-03 04:14:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-03 04:14:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2022-11-03 04:14:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:03,736 INFO L225 Difference]: With dead ends: 630 [2022-11-03 04:14:03,736 INFO L226 Difference]: Without dead ends: 429 [2022-11-03 04:14:03,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 162.6s TimeCoverageRelationStatistics Valid=225, Invalid=3935, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 04:14:03,740 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 440 mSDsluCounter, 5083 mSDsCounter, 0 mSdLazyCounter, 7147 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 7194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 7147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:03,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 5214 Invalid, 7194 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [47 Valid, 7147 Invalid, 0 Unknown, 0 Unchecked, 24.4s Time] [2022-11-03 04:14:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-03 04:14:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 324. [2022-11-03 04:14:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 219 states have (on average 1.4337899543378996) internal successors, (314), 222 states have internal predecessors, (314), 76 states have call successors, (76), 30 states have call predecessors, (76), 28 states have return successors, (76), 71 states have call predecessors, (76), 75 states have call successors, (76) [2022-11-03 04:14:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 466 transitions. [2022-11-03 04:14:03,940 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 466 transitions. Word has length 67 [2022-11-03 04:14:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 466 transitions. [2022-11-03 04:14:03,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:14:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 466 transitions. [2022-11-03 04:14:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 04:14:03,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:03,945 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, 1, 1, 1] [2022-11-03 04:14:03,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:04,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:14:04,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1071621407, now seen corresponding path program 1 times [2022-11-03 04:14:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:14:04,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426077170] [2022-11-03 04:14:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:14:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:04,256 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 04:14:04,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:14:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426077170] [2022-11-03 04:14:04,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426077170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:04,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:04,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:14:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744554695] [2022-11-03 04:14:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:14:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:14:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:14:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:14:04,263 INFO L87 Difference]: Start difference. First operand 324 states and 466 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:14:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:04,590 INFO L93 Difference]: Finished difference Result 735 states and 1088 transitions. [2022-11-03 04:14:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:14:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-03 04:14:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:04,596 INFO L225 Difference]: With dead ends: 735 [2022-11-03 04:14:04,596 INFO L226 Difference]: Without dead ends: 449 [2022-11-03 04:14:04,597 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 04:14:04,598 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 57 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:04,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:14:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-03 04:14:04,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 442. [2022-11-03 04:14:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 306 states have (on average 1.4640522875816993) internal successors, (448), 309 states have internal predecessors, (448), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (107), 102 states have call predecessors, (107), 106 states have call successors, (107) [2022-11-03 04:14:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 662 transitions. [2022-11-03 04:14:04,773 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 662 transitions. Word has length 72 [2022-11-03 04:14:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:04,773 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 662 transitions. [2022-11-03 04:14:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:14:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 662 transitions. [2022-11-03 04:14:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 04:14:04,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:04,776 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, 1, 1, 1, 1] [2022-11-03 04:14:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:14:04,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 915717312, now seen corresponding path program 1 times [2022-11-03 04:14:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:14:04,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191864938] [2022-11-03 04:14:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:14:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:04,947 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 04:14:04,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:14:04,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191864938] [2022-11-03 04:14:04,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191864938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:14:04,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794614175] [2022-11-03 04:14:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:04,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:14:04,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:14:04,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:14:04,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:14:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:05,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:14:05,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:05,281 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 04:14:05,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:05,352 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 04:14:05,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794614175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:14:05,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565010038] [2022-11-03 04:14:05,356 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-03 04:14:05,356 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:14:05,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:14:05,357 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:14:05,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:14:41,182 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:14:41,497 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 04:14:41,802 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-03 04:14:43,426 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-03 04:14:43,467 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-03 04:14:47,073 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-11-03 04:14:52,063 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 437 for LOIs [2022-11-03 04:14:52,315 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 04:14:52,356 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2022-11-03 04:14:54,267 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 260 for LOIs [2022-11-03 04:14:54,324 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:15:06,731 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:12,447 WARN L234 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:57,233 WARN L234 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:20,225 WARN L234 SmtUtils]: Spent 21.80s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:40,876 WARN L234 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 479 DAG size of output: 271 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:19,913 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 500 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:26,849 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 522 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:46,943 WARN L234 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 548 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1565010038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:17:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 04:17:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432653679] [2022-11-03 04:17:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 04:17:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:17:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 04:17:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 04:17:51,923 INFO L87 Difference]: Start difference. First operand 442 states and 662 transitions. Second operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:18:09,816 WARN L234 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 572 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:38,290 WARN L234 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 591 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:04,626 INFO L93 Difference]: Finished difference Result 892 states and 1367 transitions. [2022-11-03 04:19:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-03 04:19:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2022-11-03 04:19:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:04,631 INFO L225 Difference]: With dead ends: 892 [2022-11-03 04:19:04,631 INFO L226 Difference]: Without dead ends: 591 [2022-11-03 04:19:04,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 223.9s TimeCoverageRelationStatistics Valid=257, Invalid=4573, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 04:19:04,634 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 392 mSDsluCounter, 5408 mSDsCounter, 0 mSdLazyCounter, 7071 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 7132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 7071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:04,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 5459 Invalid, 7132 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 7071 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2022-11-03 04:19:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-03 04:19:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 470. [2022-11-03 04:19:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 331 states have (on average 1.4652567975830815) internal successors, (485), 335 states have internal predecessors, (485), 109 states have call successors, (109), 31 states have call predecessors, (109), 29 states have return successors, (109), 103 states have call predecessors, (109), 108 states have call successors, (109) [2022-11-03 04:19:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 703 transitions. [2022-11-03 04:19:04,877 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 703 transitions. Word has length 73 [2022-11-03 04:19:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:19:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 703 transitions. [2022-11-03 04:19:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:19:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 703 transitions. [2022-11-03 04:19:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 04:19:04,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:19:04,881 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, 1, 1, 1, 1] [2022-11-03 04:19:04,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:19:05,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 04:19:05,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:19:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:19:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1541262420, now seen corresponding path program 1 times [2022-11-03 04:19:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:19:05,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707366718] [2022-11-03 04:19:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:19:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:05,249 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 04:19:05,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:19:05,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707366718] [2022-11-03 04:19:05,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707366718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:19:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921418538] [2022-11-03 04:19:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:19:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:19:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:19:05,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:19:05,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b50b90c9-381a-404d-ac4a-8d67c5c9c7b5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:19:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:19:05,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:19:05,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:19:05,607 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 04:19:05,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:19:05,665 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 04:19:05,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921418538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:19:05,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1099997424] [2022-11-03 04:19:05,670 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-03 04:19:05,671 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:19:05,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:19:05,671 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:19:05,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:21:22,066 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 04:21:22,360 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-03 04:21:22,675 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-03 04:21:23,022 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-03 04:21:23,092 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:21:23,390 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:22:16,759 WARN L234 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 547 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:22:23,101 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 549 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)