./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh --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 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 --- 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-2329fc7 [2022-12-14 13:50:40,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:50:40,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:50:40,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:50:40,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:50:40,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:50:40,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:50:40,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:50:40,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:50:40,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:50:40,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:50:40,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:50:40,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:50:40,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:50:40,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:50:40,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:50:40,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:50:40,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:50:40,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:50:40,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:50:40,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:50:40,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:50:40,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:50:40,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:50:40,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:50:40,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:50:40,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:50:40,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:50:40,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:50:40,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:50:40,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:50:40,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:50:40,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:50:40,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:50:40,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:50:40,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:50:40,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:50:40,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:50:40,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:50:40,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:50:40,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:50:40,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:50:40,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:50:40,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:50:40,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:50:40,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:50:40,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:50:40,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:50:40,640 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:50:40,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:50:40,640 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:50:40,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:50:40,641 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:50:40,641 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:50:40,641 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:50:40,641 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:50:40,641 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:50:40,642 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:50:40,642 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:50:40,642 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:50:40,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:50:40,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:50:40,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:50:40,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:50:40,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:50:40,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:50:40,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:50:40,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:50:40,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:50:40,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:50:40,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:50:40,645 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:50:40,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:50:40,646 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_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 [2022-12-14 13:50:40,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:50:40,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:50:40,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:50:40,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:50:40,841 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:50:40,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2022-12-14 13:50:43,442 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:50:43,677 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:50:43,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2022-12-14 13:50:43,691 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/data/8ccea37bd/5bb9e9b131344a898c8cc8b827c6f733/FLAG3af58ca77 [2022-12-14 13:50:43,703 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/data/8ccea37bd/5bb9e9b131344a898c8cc8b827c6f733 [2022-12-14 13:50:43,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:50:43,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:50:43,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:50:43,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:50:43,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:50:43,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:50:43" (1/1) ... [2022-12-14 13:50:43,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd94a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:43, skipping insertion in model container [2022-12-14 13:50:43,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:50:43" (1/1) ... [2022-12-14 13:50:43,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:50:43,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:50:43,980 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,020 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,021 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,023 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,030 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-12-14 13:50:44,051 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,054 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:50:44,070 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:50:44,113 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,119 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,119 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,121 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,126 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-12-14 13:50:44,133 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,135 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:50:44,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:50:44,156 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:50:44,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44 WrapperNode [2022-12-14 13:50:44,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:50:44,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:50:44,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:50:44,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:50:44,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,208 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2022-12-14 13:50:44,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:50:44,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:50:44,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:50:44,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:50:44,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:50:44,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:50:44,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:50:44,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:50:44,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (1/1) ... [2022-12-14 13:50:44,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:50:44,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:50:44,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:50:44,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:50:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 13:50:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 13:50:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 13:50:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 13:50:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 13:50:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 13:50:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 13:50:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 13:50:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 13:50:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 13:50:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 13:50:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 13:50:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 13:50:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 13:50:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 13:50:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 13:50:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 13:50:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 13:50:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 13:50:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 13:50:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 13:50:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 13:50:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 13:50:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 13:50:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 13:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 13:50:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 13:50:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 13:50:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 13:50:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 13:50:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 13:50:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 13:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 13:50:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 13:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 13:50:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 13:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:50:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:50:44,455 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:50:44,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:50:44,997 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:50:45,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:50:45,310 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:50:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:50:45 BoogieIcfgContainer [2022-12-14 13:50:45,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:50:45,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:50:45,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:50:45,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:50:45,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:50:43" (1/3) ... [2022-12-14 13:50:45,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1710f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:50:45, skipping insertion in model container [2022-12-14 13:50:45,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:50:44" (2/3) ... [2022-12-14 13:50:45,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1710f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:50:45, skipping insertion in model container [2022-12-14 13:50:45,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:50:45" (3/3) ... [2022-12-14 13:50:45,321 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product28.cil.c [2022-12-14 13:50:45,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:50:45,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:50:45,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:50:45,399 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;@57dcea22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:50:45,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:50:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 13:50:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 13:50:45,415 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:50:45,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:50:45,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:50:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:50:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -384850357, now seen corresponding path program 1 times [2022-12-14 13:50:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:50:45,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126934737] [2022-12-14 13:50:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:50:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:45,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:50:45,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126934737] [2022-12-14 13:50:45,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126934737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:50:45,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:50:45,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:50:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217788495] [2022-12-14 13:50:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:50:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:50:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:50:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:50:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:50:45,750 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:50:45,868 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-12-14 13:50:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:50:45,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-12-14 13:50:45,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:50:45,881 INFO L225 Difference]: With dead ends: 277 [2022-12-14 13:50:45,882 INFO L226 Difference]: Without dead ends: 177 [2022-12-14 13:50:45,886 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 [2022-12-14 13:50:45,888 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:50:45,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:50:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-14 13:50:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-12-14 13:50:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 13:50:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-12-14 13:50:45,937 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-12-14 13:50:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:50:45,939 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-12-14 13:50:45,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-12-14 13:50:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 13:50:45,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:50:45,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:50:45,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:50:45,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:50:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:50:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1756801085, now seen corresponding path program 1 times [2022-12-14 13:50:45,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:50:45,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378783532] [2022-12-14 13:50:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:50:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:46,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:50:46,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378783532] [2022-12-14 13:50:46,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378783532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:50:46,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:50:46,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:50:46,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836919137] [2022-12-14 13:50:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:50:46,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:50:46,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:50:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:50:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:50:46,107 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:50:46,206 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-12-14 13:50:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:50:46,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-12-14 13:50:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:50:46,209 INFO L225 Difference]: With dead ends: 273 [2022-12-14 13:50:46,209 INFO L226 Difference]: Without dead ends: 179 [2022-12-14 13:50:46,210 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 [2022-12-14 13:50:46,212 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:50:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:50:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-14 13:50:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-12-14 13:50:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 13:50:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-12-14 13:50:46,231 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-12-14 13:50:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:50:46,231 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-12-14 13:50:46,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-12-14 13:50:46,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 13:50:46,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:50:46,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:50:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:50:46,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:50:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:50:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 931351958, now seen corresponding path program 1 times [2022-12-14 13:50:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:50:46,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443541058] [2022-12-14 13:50:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:50:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:46,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:50:46,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443541058] [2022-12-14 13:50:46,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443541058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:50:46,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:50:46,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:50:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497390120] [2022-12-14 13:50:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:50:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:50:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:50:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:50:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:50:46,326 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:50:46,413 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-12-14 13:50:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:50:46,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-12-14 13:50:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:50:46,416 INFO L225 Difference]: With dead ends: 388 [2022-12-14 13:50:46,416 INFO L226 Difference]: Without dead ends: 227 [2022-12-14 13:50:46,417 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 [2022-12-14 13:50:46,418 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:50:46,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 419 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:50:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-14 13:50:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-12-14 13:50:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 13:50:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-12-14 13:50:46,440 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-12-14 13:50:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:50:46,441 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-12-14 13:50:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:50:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-12-14 13:50:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 13:50:46,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:50:46,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:50:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:50:46,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:50:46,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:50:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash 245772466, now seen corresponding path program 1 times [2022-12-14 13:50:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:50:46,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928228606] [2022-12-14 13:50:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:50:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:46,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:50:46,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928228606] [2022-12-14 13:50:46,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928228606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:50:46,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145662539] [2022-12-14 13:50:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:46,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:50:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:50:46,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:50:46,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:50:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:50:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:50:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:46,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:50:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:50:46,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145662539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:50:46,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [71597235] [2022-12-14 13:50:46,992 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-12-14 13:50:46,992 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:50:46,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:50:47,001 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:50:47,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:51:11,541 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 13:51:11,831 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:51:12,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:51:55,547 WARN L233 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:52:00,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [71597235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:52:00,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:52:00,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 13:52:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004149823] [2022-12-14 13:52:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:52:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 13:52:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:52:00,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 13:52:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:52:00,427 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 13:52:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:52:10,698 INFO L93 Difference]: Finished difference Result 524 states and 786 transitions. [2022-12-14 13:52:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 13:52:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2022-12-14 13:52:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:52:10,701 INFO L225 Difference]: With dead ends: 524 [2022-12-14 13:52:10,701 INFO L226 Difference]: Without dead ends: 320 [2022-12-14 13:52:10,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-12-14 13:52:10,703 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 136 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:52:10,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2972 Invalid, 1806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-14 13:52:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-12-14 13:52:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 245. [2022-12-14 13:52:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 13:52:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2022-12-14 13:52:10,796 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2022-12-14 13:52:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:52:10,796 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2022-12-14 13:52:10,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 13:52:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2022-12-14 13:52:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 13:52:10,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:52:10,798 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:52:10,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:52:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:52:11,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:52:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:52:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2126757712, now seen corresponding path program 1 times [2022-12-14 13:52:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:52:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91099552] [2022-12-14 13:52:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:52:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:52:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:52:11,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:52:11,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91099552] [2022-12-14 13:52:11,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91099552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:52:11,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:52:11,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:52:11,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41621654] [2022-12-14 13:52:11,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:52:11,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:52:11,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:52:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:52:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:52:11,101 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 13:52:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:52:11,337 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2022-12-14 13:52:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:52:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-12-14 13:52:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:52:11,339 INFO L225 Difference]: With dead ends: 583 [2022-12-14 13:52:11,339 INFO L226 Difference]: Without dead ends: 362 [2022-12-14 13:52:11,340 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 [2022-12-14 13:52:11,340 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:52:11,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:52:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-12-14 13:52:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-12-14 13:52:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 13:52:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-12-14 13:52:11,477 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2022-12-14 13:52:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:52:11,477 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-12-14 13:52:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 13:52:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-12-14 13:52:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 13:52:11,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:52:11,479 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:52:11,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:52:11,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:52:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:52:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1598309295, now seen corresponding path program 1 times [2022-12-14 13:52:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:52:11,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530949525] [2022-12-14 13:52:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:52:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:52:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:52:11,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:52:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530949525] [2022-12-14 13:52:11,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530949525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:52:11,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622197675] [2022-12-14 13:52:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:52:11,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:52:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:52:11,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:52:11,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:52:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:11,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:52:11,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:52:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:52:11,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:52:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:52:11,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622197675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:52:11,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1540969324] [2022-12-14 13:52:11,846 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 13:52:11,846 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:52:11,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:52:11,847 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:52:11,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:52:53,665 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:52:53,956 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-12-14 13:52:54,242 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:53:33,670 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 587 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:53:42,243 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:53:49,210 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 584 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:53:58,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1540969324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:53:58,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:53:58,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 13:53:58,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798625519] [2022-12-14 13:53:58,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:53:58,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 13:53:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:53:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 13:53:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:53:58,732 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 13:54:05,395 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 509 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:54:28,489 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 521 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:54:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:33,163 INFO L93 Difference]: Finished difference Result 798 states and 1243 transitions. [2022-12-14 13:54:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 13:54:33,164 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-12-14 13:54:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:33,166 INFO L225 Difference]: With dead ends: 798 [2022-12-14 13:54:33,166 INFO L226 Difference]: Without dead ends: 504 [2022-12-14 13:54:33,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 92.3s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:54:33,167 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 182 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:33,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 3063 Invalid, 1980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 13:54:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-12-14 13:54:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 418. [2022-12-14 13:54:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 304 states have (on average 1.5032894736842106) internal successors, (457), 309 states have internal predecessors, (457), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 13:54:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 634 transitions. [2022-12-14 13:54:33,415 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 634 transitions. Word has length 74 [2022-12-14 13:54:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:33,415 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 634 transitions. [2022-12-14 13:54:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 13:54:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 634 transitions. [2022-12-14 13:54:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 13:54:33,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:33,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:54:33,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:54:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:33,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1351130279, now seen corresponding path program 1 times [2022-12-14 13:54:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968078328] [2022-12-14 13:54:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:54:33,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:33,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968078328] [2022-12-14 13:54:33,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968078328] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:54:33,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679737399] [2022-12-14 13:54:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:54:33,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:54:33,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:54:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:33,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:54:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:54:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:54:33,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:54:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:54:34,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679737399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:54:34,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344874736] [2022-12-14 13:54:34,029 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-12-14 13:54:34,029 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:54:34,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:54:34,030 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:54:34,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:56:02,287 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:56:02,570 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-12-14 13:56:02,845 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-12-14 13:56:03,116 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-12-14 13:56:03,722 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-12-14 13:56:03,780 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 13:56:04,068 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 241 for LOIs [2022-12-14 13:56:10,465 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 212 for LOIs [2022-12-14 13:56:10,496 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 230 for LOIs [2022-12-14 13:56:10,557 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-12-14 13:56:10,595 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2022-12-14 13:56:12,048 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:56:58,975 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 533 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:57:54,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [344874736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:57:54,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:57:54,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-12-14 13:57:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221517503] [2022-12-14 13:57:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:57:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 13:57:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:57:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 13:57:54,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3258, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 13:57:54,142 INFO L87 Difference]: Start difference. First operand 418 states and 634 transitions. Second operand has 54 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 13:58:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:58:54,768 INFO L93 Difference]: Finished difference Result 929 states and 1453 transitions. [2022-12-14 13:58:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 13:58:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 77 [2022-12-14 13:58:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:58:54,772 INFO L225 Difference]: With dead ends: 929 [2022-12-14 13:58:54,772 INFO L226 Difference]: Without dead ends: 635 [2022-12-14 13:58:54,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 138.8s TimeCoverageRelationStatistics Valid=278, Invalid=4978, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 13:58:54,774 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 246 mSDsluCounter, 5185 mSDsCounter, 0 mSdLazyCounter, 7548 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 5408 SdHoareTripleChecker+Invalid, 7583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 7548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:58:54,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 5408 Invalid, 7583 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [35 Valid, 7548 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-12-14 13:58:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-12-14 13:58:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 558. [2022-12-14 13:58:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 425 states have (on average 1.5270588235294118) internal successors, (649), 432 states have internal predecessors, (649), 101 states have call successors, (101), 33 states have call predecessors, (101), 31 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 13:58:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 850 transitions. [2022-12-14 13:58:55,270 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 850 transitions. Word has length 77 [2022-12-14 13:58:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:58:55,270 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 850 transitions. [2022-12-14 13:58:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 13:58:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 850 transitions. [2022-12-14 13:58:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 13:58:55,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:58:55,272 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 13:58:55,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 13:58:55,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:58:55,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:58:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:58:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 25152443, now seen corresponding path program 1 times [2022-12-14 13:58:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:58:55,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756238308] [2022-12-14 13:58:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:58:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:58:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:58:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:58:55,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:58:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756238308] [2022-12-14 13:58:55,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756238308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:58:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679169301] [2022-12-14 13:58:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:58:55,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:58:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:58:55,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:58:55,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:58:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:58:55,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:58:55,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:58:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:58:55,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:58:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:58:55,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679169301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:58:55,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1936629877] [2022-12-14 13:58:55,873 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 13:58:55,873 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:58:55,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:58:55,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:58:55,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:59:26,172 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:59:26,461 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-12-14 13:59:26,759 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:00:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1936629877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:10,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:00:10,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [5, 5, 5] total 30 [2022-12-14 14:00:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580474457] [2022-12-14 14:00:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:10,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:00:10,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:00:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:00:10,667 INFO L87 Difference]: Start difference. First operand 558 states and 850 transitions. Second operand has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 14:00:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:43,412 INFO L93 Difference]: Finished difference Result 1072 states and 1697 transitions. [2022-12-14 14:00:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:00:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 79 [2022-12-14 14:00:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:43,415 INFO L225 Difference]: With dead ends: 1072 [2022-12-14 14:00:43,415 INFO L226 Difference]: Without dead ends: 763 [2022-12-14 14:00:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 67.7s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:00:43,417 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 261 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 3250 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-14 14:00:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-12-14 14:00:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 585. [2022-12-14 14:00:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.5210643015521064) internal successors, (686), 458 states have internal predecessors, (686), 102 states have call successors, (102), 33 states have call predecessors, (102), 31 states have return successors, (101), 95 states have call predecessors, (101), 101 states have call successors, (101) [2022-12-14 14:00:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 889 transitions. [2022-12-14 14:00:43,965 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 889 transitions. Word has length 79 [2022-12-14 14:00:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:43,965 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 889 transitions. [2022-12-14 14:00:43,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 14:00:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 889 transitions. [2022-12-14 14:00:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 14:00:43,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:43,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:43,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:00:44,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 14:00:44,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:00:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:44,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1925653498, now seen corresponding path program 1 times [2022-12-14 14:00:44,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:44,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233774010] [2022-12-14 14:00:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:00:45,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:45,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233774010] [2022-12-14 14:00:45,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233774010] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:00:45,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681789340] [2022-12-14 14:00:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:00:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:00:45,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:00:45,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdaf11e4-341d-4c0d-ac03-67a3d9860fa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:00:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:45,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:00:45,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:00:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:00:45,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:00:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:00:45,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681789340] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:00:45,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1272920534] [2022-12-14 14:00:45,768 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 14:00:45,768 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:00:45,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:00:45,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:00:45,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:01:53,733 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 14:01:54,024 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-12-14 14:01:54,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-12-14 14:01:54,567 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 238 for LOIs [2022-12-14 14:01:55,151 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-12-14 14:01:55,209 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-12-14 14:01:55,490 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 233 for LOIs [2022-12-14 14:02:07,469 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 204 for LOIs [2022-12-14 14:02:07,497 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 223 for LOIs [2022-12-14 14:02:07,556 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2022-12-14 14:02:07,595 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-12-14 14:02:11,140 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:02:46,746 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 518 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:02:58,830 WARN L233 SmtUtils]: Spent 10.87s on a formula simplification. DAG size of input: 530 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:03:08,503 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 533 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:03:45,531 WARN L233 SmtUtils]: Spent 12.63s on a formula simplification. DAG size of input: 530 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:03:54,839 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 424 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:04:24,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1272920534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:04:24,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:04:24,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [21, 5, 5] total 79 [2022-12-14 14:04:24,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521886660] [2022-12-14 14:04:24,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:04:24,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-14 14:04:24,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:04:24,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-14 14:04:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=5830, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 14:04:24,101 INFO L87 Difference]: Start difference. First operand 585 states and 889 transitions. Second operand has 56 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 34 states have internal predecessors, (42), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 14:04:40,591 WARN L233 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 467 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)