./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/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_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/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_4e1b7919-1365-48cc-9abe-75dab3ec2abf/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 d732923830fb3a71ab6990fcf85b09499ea996afd0bf98e12e19d094dda2a9f7 --- 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 02:00:58,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:00:58,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:00:58,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:00:58,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:00:58,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:00:58,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:00:58,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:00:58,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:00:58,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:00:58,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:00:58,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:00:58,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:00:58,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:00:58,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:00:58,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:00:58,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:00:58,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:00:58,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:00:58,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:00:58,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:00:58,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:00:58,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:00:58,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:00:58,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:00:58,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:00:58,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:00:58,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:00:58,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:00:58,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:00:58,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:00:58,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:00:58,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:00:58,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:00:58,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:00:58,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:00:58,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:00:58,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:00:58,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:00:58,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:00:58,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:00:58,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:00:58,595 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:00:58,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:00:58,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:00:58,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:00:58,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:00:58,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:00:58,596 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:00:58,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:00:58,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:00:58,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:00:58,597 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:00:58,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:00:58,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:00:58,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:00:58,598 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:00:58,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:00:58,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:00:58,599 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:00:58,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:00:58,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:00:58,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:00:58,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:00:58,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:00:58,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:00:58,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:00:58,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:00:58,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:00:58,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:00:58,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:00:58,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:00:58,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:00:58,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:00:58,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:58,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:00:58,603 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:00:58,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:00:58,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:00:58,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:00:58,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:00:58,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:00:58,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:00:58,606 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_4e1b7919-1365-48cc-9abe-75dab3ec2abf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d732923830fb3a71ab6990fcf85b09499ea996afd0bf98e12e19d094dda2a9f7 [2022-11-03 02:00:58,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:00:58,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:00:58,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:00:58,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:00:58,970 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:00:58,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec0_product27.cil.c [2022-11-03 02:00:59,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/data/782b20022/8839e49d94a1450da3e69be69087969c/FLAG2aec7092f [2022-11-03 02:00:59,582 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:00:59,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c [2022-11-03 02:00:59,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/data/782b20022/8839e49d94a1450da3e69be69087969c/FLAG2aec7092f [2022-11-03 02:00:59,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/data/782b20022/8839e49d94a1450da3e69be69087969c [2022-11-03 02:00:59,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:00:59,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:00:59,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:59,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:00:59,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:00:59,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:59" (1/1) ... [2022-11-03 02:00:59,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72832ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:59, skipping insertion in model container [2022-11-03 02:00:59,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:59" (1/1) ... [2022-11-03 02:00:59,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:00:59,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:01:00,394 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_4e1b7919-1365-48cc-9abe-75dab3ec2abf/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c[28349,28362] [2022-11-03 02:01:00,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:00,653 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:01:00,738 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_4e1b7919-1365-48cc-9abe-75dab3ec2abf/sv-benchmarks/c/product-lines/email_spec0_product27.cil.c[28349,28362] [2022-11-03 02:01:00,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:00,802 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:01:00,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00 WrapperNode [2022-11-03 02:01:00,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:00,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:00,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:01:00,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:01:00,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,894 INFO L138 Inliner]: procedures = 133, calls = 227, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1124 [2022-11-03 02:01:00,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:00,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:01:00,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:01:00,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:01:00,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:01:00,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:01:00,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:01:00,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:01:00,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (1/1) ... [2022-11-03 02:01:00,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:01,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:01,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:01:01,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:01:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:01:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:01:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:01:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:01:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:01:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:01:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:01:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:01:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:01:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:01:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:01:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:01:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:01:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:01:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:01:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:01:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:01:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:01:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:01:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:01:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:01:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 02:01:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 02:01:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:01:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:01:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:01:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:01:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:01:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:01:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:01:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:01:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:01:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:01:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:01:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:01:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:01:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:01:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:01:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:01:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:01:01,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:01:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:01:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:01:01,113 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:01:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:01:01,114 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:01:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:01:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:01:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:01:01,396 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:01:01,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:01:02,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:03,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:03,043 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:01:03,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:03 BoogieIcfgContainer [2022-11-03 02:01:03,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:03,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:03,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:03,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:03,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:00:59" (1/3) ... [2022-11-03 02:01:03,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:03, skipping insertion in model container [2022-11-03 02:01:03,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:00" (2/3) ... [2022-11-03 02:01:03,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:03, skipping insertion in model container [2022-11-03 02:01:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:03" (3/3) ... [2022-11-03 02:01:03,056 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product27.cil.c [2022-11-03 02:01:03,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:03,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:01:03,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:03,169 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;@52f194f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:03,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:01:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-03 02:01:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:01:03,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:03,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:03,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:03,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1016220549, now seen corresponding path program 1 times [2022-11-03 02:01:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:03,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020834371] [2022-11-03 02:01:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:03,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020834371] [2022-11-03 02:01:03,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020834371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:03,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:03,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:01:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114478862] [2022-11-03 02:01:03,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:01:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:01:03,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:01:03,787 INFO L87 Difference]: Start difference. First operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:04,001 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2022-11-03 02:01:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:01:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-03 02:01:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:04,019 INFO L225 Difference]: With dead ends: 290 [2022-11-03 02:01:04,020 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 02:01:04,029 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 02:01:04,033 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:04,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 02:01:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-03 02:01:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 02:01:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2022-11-03 02:01:04,125 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 73 [2022-11-03 02:01:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2022-11-03 02:01:04,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2022-11-03 02:01:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:01:04,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:04,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:01:04,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:04,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 167171433, now seen corresponding path program 1 times [2022-11-03 02:01:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:04,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924186838] [2022-11-03 02:01:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:04,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:04,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924186838] [2022-11-03 02:01:04,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924186838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:04,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:04,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:04,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424466905] [2022-11-03 02:01:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:04,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:04,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:04,523 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:04,662 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2022-11-03 02:01:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-03 02:01:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:04,665 INFO L225 Difference]: With dead ends: 286 [2022-11-03 02:01:04,666 INFO L226 Difference]: Without dead ends: 190 [2022-11-03 02:01:04,667 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 02:01:04,668 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:04,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-03 02:01:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-03 02:01:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 109 states have (on average 1.275229357798165) internal successors, (139), 111 states have internal predecessors, (139), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 02:01:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2022-11-03 02:01:04,705 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 74 [2022-11-03 02:01:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:04,706 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2022-11-03 02:01:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2022-11-03 02:01:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:01:04,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:04,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:04,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash 734482645, now seen corresponding path program 1 times [2022-11-03 02:01:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098689507] [2022-11-03 02:01:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:04,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:04,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:04,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098689507] [2022-11-03 02:01:04,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098689507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:04,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:04,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88691355] [2022-11-03 02:01:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:04,835 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:04,971 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2022-11-03 02:01:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-03 02:01:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:04,974 INFO L225 Difference]: With dead ends: 415 [2022-11-03 02:01:04,974 INFO L226 Difference]: Without dead ends: 243 [2022-11-03 02:01:04,975 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 02:01:04,977 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 59 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:04,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 439 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-03 02:01:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2022-11-03 02:01:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 145 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 02:01:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2022-11-03 02:01:04,999 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 79 [2022-11-03 02:01:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:05,000 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2022-11-03 02:01:05,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:01:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2022-11-03 02:01:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:01:05,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:05,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:05,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:01:05,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash -344943077, now seen corresponding path program 1 times [2022-11-03 02:01:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:05,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344323323] [2022-11-03 02:01:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:05,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:05,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344323323] [2022-11-03 02:01:05,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344323323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:05,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289831955] [2022-11-03 02:01:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:05,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:05,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:05,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:01:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:05,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:01:05,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:05,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:05,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289831955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:05,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [970134361] [2022-11-03 02:01:05,847 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-03 02:01:05,848 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:01:05,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:01:05,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:01:05,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:01:45,610 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:01:45,929 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:01:46,287 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 470 for LOIs [2022-11-03 02:02:22,233 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 468 for LOIs [2022-11-03 02:02:39,361 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-03 02:02:42,563 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-11-03 02:02:42,600 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-03 02:02:42,645 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2022-11-03 02:02:42,955 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-03 02:02:43,696 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 444 for LOIs [2022-11-03 02:02:44,006 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:57,295 WARN L234 SmtUtils]: Spent 5.51s 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 02:03:03,352 WARN L234 SmtUtils]: Spent 5.91s 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 02:03:31,476 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 504 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:38,072 WARN L234 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 514 DAG size of output: 302 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:46,243 WARN L234 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 563 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:03:54,526 WARN L234 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 565 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:19,254 WARN L234 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 564 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:48,759 WARN L234 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 448 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:04:55,725 WARN L234 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 464 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:02,285 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 520 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:09,254 WARN L234 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 533 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:19,892 WARN L234 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 570 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:47,274 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 497 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:05:58,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [970134361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:58,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:05:58,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-03 02:05:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521016795] [2022-11-03 02:05:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 02:05:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 02:05:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 02:05:58,539 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-03 02:06:11,722 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 455 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:07:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:04,174 INFO L93 Difference]: Finished difference Result 632 states and 964 transitions. [2022-11-03 02:07:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 02:07:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 80 [2022-11-03 02:07:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:04,179 INFO L225 Difference]: With dead ends: 632 [2022-11-03 02:07:04,179 INFO L226 Difference]: Without dead ends: 412 [2022-11-03 02:07:04,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 226.6s TimeCoverageRelationStatistics Valid=202, Invalid=3580, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 02:07:04,182 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 185 mSDsluCounter, 5373 mSDsCounter, 0 mSdLazyCounter, 7479 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 7514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 7479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:04,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 5476 Invalid, 7514 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [35 Valid, 7479 Invalid, 0 Unknown, 0 Unchecked, 32.6s Time] [2022-11-03 02:07:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-03 02:07:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 306. [2022-11-03 02:07:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 193 states have (on average 1.3523316062176165) internal successors, (261), 196 states have internal predecessors, (261), 83 states have call successors, (83), 31 states have call predecessors, (83), 29 states have return successors, (83), 78 states have call predecessors, (83), 82 states have call successors, (83) [2022-11-03 02:07:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 427 transitions. [2022-11-03 02:07:04,399 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 427 transitions. Word has length 80 [2022-11-03 02:07:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:04,400 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 427 transitions. [2022-11-03 02:07:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-03 02:07:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 427 transitions. [2022-11-03 02:07:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:07:04,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:04,403 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:04,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:04,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -770581194, now seen corresponding path program 1 times [2022-11-03 02:07:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85619099] [2022-11-03 02:07:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:07:04,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85619099] [2022-11-03 02:07:04,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85619099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:04,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:04,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:04,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799938272] [2022-11-03 02:07:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:04,747 INFO L87 Difference]: Start difference. First operand 306 states and 427 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:07:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:05,143 INFO L93 Difference]: Finished difference Result 714 states and 1034 transitions. [2022-11-03 02:07:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 85 [2022-11-03 02:07:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:05,148 INFO L225 Difference]: With dead ends: 714 [2022-11-03 02:07:05,148 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 02:07:05,149 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 02:07:05,150 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 57 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:05,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 457 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 02:07:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 427. [2022-11-03 02:07:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 286 states have internal predecessors, (401), 114 states have call successors, (114), 31 states have call predecessors, (114), 29 states have return successors, (114), 109 states have call predecessors, (114), 113 states have call successors, (114) [2022-11-03 02:07:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 629 transitions. [2022-11-03 02:07:05,373 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 629 transitions. Word has length 85 [2022-11-03 02:07:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:05,373 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 629 transitions. [2022-11-03 02:07:05,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:07:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 629 transitions. [2022-11-03 02:07:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:07:05,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:05,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:05,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:07:05,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:05,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 749809214, now seen corresponding path program 1 times [2022-11-03 02:07:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:05,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329327946] [2022-11-03 02:07:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:07:05,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:05,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329327946] [2022-11-03 02:07:05,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329327946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:05,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777021377] [2022-11-03 02:07:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:05,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:05,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:05,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:05,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1b7919-1365-48cc-9abe-75dab3ec2abf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:07:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:05,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:07:05,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:07:05,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777021377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:05,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708490215] [2022-11-03 02:07:05,979 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-03 02:07:05,979 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:05,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:05,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:05,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:07:43,237 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:07:43,578 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:07:43,898 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 470 for LOIs [2022-11-03 02:08:20,612 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 468 for LOIs [2022-11-03 02:08:39,040 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2022-11-03 02:08:46,451 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-11-03 02:08:46,490 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-03 02:08:46,537 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 448 for LOIs [2022-11-03 02:08:46,855 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-11-03 02:08:47,601 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 250 for LOIs [2022-11-03 02:08:47,650 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 455 for LOIs [2022-11-03 02:08:48,232 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:09:26,915 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 492 DAG size of output: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:33,961 WARN L234 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 504 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:40,873 WARN L234 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 514 DAG size of output: 302 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:49,198 WARN L234 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 563 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:09:58,400 WARN L234 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 565 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:04,396 WARN L234 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:10,383 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:16,356 WARN L234 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:25,688 WARN L234 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 564 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:36,726 WARN L234 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 484 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:49,806 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 524 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:10:57,147 WARN L234 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 448 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:04,329 WARN L234 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 464 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:11,338 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 520 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:18,862 WARN L234 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 533 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:30,479 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 570 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:37,981 WARN L234 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 455 DAG size of output: 261 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:11:45,370 WARN L234 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 479 DAG size of output: 268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:04,479 WARN L234 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 497 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:29,595 WARN L234 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 539 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:36,765 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 539 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:50,056 WARN L234 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 601 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:12:57,509 WARN L234 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 602 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:05,105 WARN L234 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 635 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:05,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1708490215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:05,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:13:05,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2022-11-03 02:13:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077241768] [2022-11-03 02:13:05,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:05,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-03 02:13:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-03 02:13:05,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3584, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 02:13:05,115 INFO L87 Difference]: Start difference. First operand 427 states and 629 transitions. Second operand has 57 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 35 states have internal predecessors, (44), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-03 02:13:13,709 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 453 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:19,516 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 455 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:13:38,138 WARN L234 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 473 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)